212202210204 has 72 divisors (see below), whose sum is σ = 544083347808. Its totient is φ = 69721357440.

The previous prime is 212202210193. The next prime is 212202210217. The reversal of 212202210204 is 402012202212.

212202210204 is a `hidden beast` number, since 21 + 220 + 221 + 0 + 204 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15832834 + ... + 15846230.

It is an arithmetic number, because the mean of its divisors is an integer number (7556713164).

Almost surely, 2^212202210204 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 212202210204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (272041673904).

212202210204 is an abundant number, since it is smaller than the sum of its proper divisors (331881137604).

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

212202210204 is a wasteful number, since it uses less digits than its factorization.

212202210204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19675 (or 19670 counting only the distinct ones).

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

Adding to 212202210204 its reverse (402012202212), we get a palindrome (614214412416).

The spelling of 212202210204 in words is "two hundred twelve billion, two hundred two million, two hundred ten thousand, two hundred four".