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211212101212001 = 1947638123335159
BaseRepresentation
bin110000000001100010100110…
…010000111101011101100001
31000200211200100111010200111022
4300001202212100331131201
5210140444340402241001
62025113255542055225
762326366523202461
oct6001424620753541
91020750314120438
10211212101212001
116133160493410a
121b8323a141a515
1390b12a5b12c76
143a22a124c3ba1
1519641a128211b
hexc018a643d761

211212101212001 has 8 divisors (see below), whose sum is σ = 222329003822400. Its totient is φ = 200095246224720.

The previous prime is 211212101211953. The next prime is 211212101212033. The reversal of 211212101212001 is 100212101212112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 211212101212001 - 234 = 211194921342817 is a prime.

It is a super-2 number, since 2×2112121012120012 (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211212101214001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2616341 + ... + 20718818.

It is an arithmetic number, because the mean of its divisors is an integer number (27791125477800).

Almost surely, 2211212101212001 is an apocalyptic number.

It is an amenable number.

211212101212001 is a deficient number, since it is larger than the sum of its proper divisors (11116902610399).

211212101212001 is a wasteful number, since it uses less digits than its factorization.

211212101212001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23811559.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 211212101212001 its reverse (100212101212112), we get a palindrome (311424202424113).

The spelling of 211212101212001 in words is "two hundred eleven trillion, two hundred twelve billion, one hundred one million, two hundred twelve thousand, one".

Divisors: 1 19 476381 9051239 23335159 443368021 11116426379579 211212101212001