211211212210112 has 56 divisors (see below), whose sum is σ = 443778681859200. Its totient is φ = 99393022771200.

The previous prime is 211211212210111. The next prime is 211211212210121. The reversal of 211211212210112 is 211012212112112.

It is a happy number.

It is a super-2 number, since 2×211211212210112² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211211212210111) 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, 319105112 + ... + 319766312.

Almost surely, 2^{211211212210112} is an apocalyptic number.

It is an amenable number.

211211212210112 is an abundant number, since it is smaller than the sum of its proper divisors (232567469649088).

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

211211212210112 is a wasteful number, since it uses less digits than its factorization.

211211212210112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 954829 (or 954819 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 20.

Adding to 211211212210112 its reverse (211012212112112), we get a palindrome (422223424322224).

The spelling of 211211212210112 in words is "two hundred eleven trillion, two hundred eleven billion, two hundred twelve million, two hundred ten thousand, one hundred twelve".