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1212012122013 = 327117323958017
BaseRepresentation
bin10001101000110001100…
…011010100111110011101
311021212102012122010121100
4101220301203110332131
5124324200100401023
62324442442023313
7153364535024640
oct21506143247635
94255365563540
101212012122013
11428014278160
12176a904a7b39
138a3a5104c04
14429399bda57
15217d9552c43
hex11a318d4f9d

1212012122013 has 48 divisors (see below), whose sum is σ = 2212570878336. Its totient is φ = 620991774720.

The previous prime is 1212012122003. The next prime is 1212012122047. The reversal of 1212012122013 is 3102212102121.

It is not a de Polignac number, because 1212012122013 - 224 = 1211995344797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212012122003) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11928420 + ... + 12029597.

It is an arithmetic number, because the mean of its divisors is an integer number (46095226632).

Almost surely, 21212012122013 is an apocalyptic number.

It is an amenable number.

1212012122013 is a deficient number, since it is larger than the sum of its proper divisors (1000558756323).

1212012122013 is a wasteful number, since it uses less digits than its factorization.

1212012122013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23958114 (or 23958111 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 1212012122013 its reverse (3102212102121), we get a palindrome (4314224224134).

It can be divided in two parts, 1212012 and 122013, that added together give a square (1334025 = 11552).

The spelling of 1212012122013 in words is "one trillion, two hundred twelve billion, twelve million, one hundred twenty-two thousand, thirteen".

Divisors: 1 3 7 9 11 21 33 63 73 77 99 219 231 511 657 693 803 1533 2409 4599 5621 7227 16863 50589 23958017 71874051 167706119 215622153 263538187 503118357 790614561 1509355071 1748935241 1844767309 2371843683 5246805723 5534301927 12242546687 15740417169 16602905781 19238287651 36727640061 57714862953 110182920183 134668013557 173144588859 404004040671 1212012122013