212322200022 has 32 divisors (see below), whose sum is σ = 471905330400. Its totient is φ = 70762333824.

The previous prime is 212322200021. The next prime is 212322200039. The reversal of 212322200022 is 220002223212.

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

It is a junction number, because it is equal to n+sod(n) for n = 212322199968 and 212322200004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212322200021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5938 + ... + 651674.

It is an arithmetic number, because the mean of its divisors is an integer number (14747041575).

Almost surely, 2^212322200022 is an apocalyptic number.

212322200022 is an abundant number, since it is smaller than the sum of its proper divisors (259583130378).

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

212322200022 is a wasteful number, since it uses less digits than its factorization.

212322200022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 651837 (or 651831 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 212322200022 its reverse (220002223212), we get a palindrome (432324423234).

The spelling of 212322200022 in words is "two hundred twelve billion, three hundred twenty-two million, two hundred thousand, twenty-two".