212133121232 has 40 divisors (see below), whose sum is σ = 454105953216. Its totient is φ = 95487028736.

The previous prime is 212133121231. The next prime is 212133121259. The reversal of 212133121232 is 232121331212.

It is a super-2 number, since 2×212133121232² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a junction number, because it is equal to n+sod(n) for n = 212133121198 and 212133121207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212133121231) 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, 16948118 + ... + 16960629.

Almost surely, 2^212133121232 is an apocalyptic number.

It is an amenable number.

212133121232 is an abundant number, since it is smaller than the sum of its proper divisors (241972831984).

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

212133121232 is a wasteful number, since it uses less digits than its factorization.

212133121232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33908795 (or 33908789 counting only the distinct ones).

The product of its digits is 864, while the sum is 23.

Adding to 212133121232 its reverse (232121331212), we get a palindrome (444254452444).

The spelling of 212133121232 in words is "two hundred twelve billion, one hundred thirty-three million, one hundred twenty-one thousand, two hundred thirty-two".