212372172210 has 128 divisors (see below), whose sum is σ = 565223629824. Its totient is φ = 50638319360.

The previous prime is 212372172191. The next prime is 212372172301. The reversal of 212372172210 is 12271273212.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6200452 + ... + 6234608.

It is an arithmetic number, because the mean of its divisors is an integer number (4415809608).

Almost surely, 2^212372172210 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212372172210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (282611814912).

212372172210 is an abundant number, since it is smaller than the sum of its proper divisors (352851457614).

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

212372172210 is a wasteful number, since it uses less digits than its factorization.

212372172210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34488.

The product of its (nonzero) digits is 4704, while the sum is 30.

The spelling of 212372172210 in words is "two hundred twelve billion, three hundred seventy-two million, one hundred seventy-two thousand, two hundred ten".