212111202111252 has 96 divisors (see below), whose sum is σ = 539298813836160. Its totient is φ = 64614318612480.

The previous prime is 212111202111251. The next prime is 212111202111301. The reversal of 212111202111252 is 252111202111212.

It is a super-2 number, since 2×212111202111252² (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 (212111202111251) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24910677 + ... + 32322812.

It is an arithmetic number, because the mean of its divisors is an integer number (5617695977460).

Almost surely, 2^{212111202111252} is an apocalyptic number.

It is an amenable number.

212111202111252 is an abundant number, since it is smaller than the sum of its proper divisors (327187611724908).

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

212111202111252 is a wasteful number, since it uses less digits than its factorization.

212111202111252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57234041 (or 57234039 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 24.

Adding to 212111202111252 its reverse (252111202111212), we get a palindrome (464222404222464).

The spelling of 212111202111252 in words is "two hundred twelve trillion, one hundred eleven billion, two hundred two million, one hundred eleven thousand, two hundred fifty-two".