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13001122212 = 22313389214243
BaseRepresentation
bin11000001101110110…
…10110000110100100
31020120001220102211220
430012323112012210
5203111241402322
65550031100340
7640115500251
oct140673260644
936501812756
1013001122212
115571881601
12262a0716b0
1312c26a5730
148b497c428
155115c455c
hex306ed61a4

13001122212 has 48 divisors (see below), whose sum is σ = 32753622720. Its totient is φ = 3990043008.

The previous prime is 13001122201. The next prime is 13001122219. The reversal of 13001122212 is 21222110031.

It is a super-3 number, since 3×130011222123 (a number of 31 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13001122191 and 13001122200.

It is not an unprimeable number, because it can be changed into a prime (13001122219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46438 + ... + 167805.

It is an arithmetic number, because the mean of its divisors is an integer number (682367140).

Almost surely, 213001122212 is an apocalyptic number.

13001122212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13001122212 is an abundant number, since it is smaller than the sum of its proper divisors (19752500508).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13001122212 is a wasteful number, since it uses less digits than its factorization.

13001122212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214652 (or 214650 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 13001122212 its reverse (21222110031), we get a palindrome (34223232243).

The spelling of 13001122212 in words is "thirteen billion, one million, one hundred twenty-two thousand, two hundred twelve".

Divisors: 1 2 3 4 6 12 13 26 39 52 78 156 389 778 1167 1556 2334 4668 5057 10114 15171 20228 30342 60684 214243 428486 642729 856972 1285458 2570916 2785159 5570318 8355477 11140636 16710954 33421908 83340527 166681054 250021581 333362108 500043162 1000086324 1083426851 2166853702 3250280553 4333707404 6500561106 13001122212