212021021232 has 400 divisors, whose sum is σ = 641057303040. Its totient is φ = 67604544000.

The previous prime is 212021021159. The next prime is 212021021239. The reversal of 212021021232 is 232120120212.

212021021232 is a `hidden beast` number, since 212 + 0 + 210 + 212 + 32 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (212021021239) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 782365257 + ... + 782365527.

Almost surely, 2^212021021232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212021021232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (320528651520).

212021021232 is an abundant number, since it is smaller than the sum of its proper divisors (429036281808).

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

212021021232 is a wasteful number, since it uses less digits than its factorization.

212021021232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 574 (or 559 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 212021021232 its reverse (232120120212), we get a palindrome (444141141444).

The spelling of 212021021232 in words is "two hundred twelve billion, twenty-one million, twenty-one thousand, two hundred thirty-two".