212021123232 has 96 divisors (see below), whose sum is σ = 574907203584. Its totient is φ = 68346489600.

The previous prime is 212021123231. The next prime is 212021123239. The reversal of 212021123232 is 232321120212.

It is a tau number, because it is divible by the number of its divisors (96).

It is a junction number, because it is equal to n+sod(n) for n = 212021123199 and 212021123208.

It is not an unprimeable number, because it can be changed into a prime (212021123231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4401357 + ... + 4449267.

It is an arithmetic number, because the mean of its divisors is an integer number (5988616704).

Almost surely, 2^212021123232 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 212021123232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (287453601792).

212021123232 is an abundant number, since it is smaller than the sum of its proper divisors (362886080352).

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

212021123232 is a wasteful number, since it uses less digits than its factorization.

212021123232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49442 (or 49434 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 212021123232 its reverse (232321120212), we get a palindrome (444342243444).

The spelling of 212021123232 in words is "two hundred twelve billion, twenty-one million, one hundred twenty-three thousand, two hundred thirty-two".