212021022210 has 16 divisors (see below), whose sum is σ = 508850453376. Its totient is φ = 56538939248.

The previous prime is 212021022209. The next prime is 212021022217. The reversal of 212021022210 is 12220120212.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 212021022210.

It is not an unprimeable number, because it can be changed into a prime (212021022217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3533683674 + ... + 3533683733.

It is an arithmetic number, because the mean of its divisors is an integer number (31803153336).

Almost surely, 2^212021022210 is an apocalyptic number.

212021022210 is an abundant number, since it is smaller than the sum of its proper divisors (296829431166).

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

212021022210 is a wasteful number, since it uses less digits than its factorization.

212021022210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7067367417.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 212021022210 its reverse (12220120212), we get a palindrome (224241142422).

The spelling of 212021022210 in words is "two hundred twelve billion, twenty-one million, twenty-two thousand, two hundred ten".