212201022204 has 18 divisors (see below), whose sum is σ = 536397028440. Its totient is φ = 70733674056.

The previous prime is 212201022203. The next prime is 212201022301. The reversal of 212201022204 is 402220102212.

It is a tau number, because it is divible by the number of its divisors (18).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212201022203) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2947236384 + ... + 2947236455.

Almost surely, 2^212201022204 is an apocalyptic number.

It is an amenable number.

212201022204 is an abundant number, since it is smaller than the sum of its proper divisors (324196006236).

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

212201022204 is a wasteful number, since it uses less digits than its factorization.

212201022204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5894472849 (or 5894472844 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 212201022204 its reverse (402220102212), we get a palindrome (614421124416).

The spelling of 212201022204 in words is "two hundred twelve billion, two hundred one million, twenty-two thousand, two hundred four".