210021202212212 has 12 divisors (see below), whose sum is σ = 367539289480356. Its totient is φ = 105009976646400.

The previous prime is 210021202212187. The next prime is 210021202212271. The reversal of 210021202212212 is 212212202120012.

It can be written as a sum of positive squares in 2 ways, for example, as 96595166384656 + 113426035827556 = 9828284^2 + 10650166^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 155357789 + ... + 156703812.

It is an arithmetic number, because the mean of its divisors is an integer number (30628274123363).

Almost surely, 2^{210021202212212} is an apocalyptic number.

It is an amenable number.

210021202212212 is a deficient number, since it is larger than the sum of its proper divisors (157518087268144).

210021202212212 is a wasteful number, since it uses less digits than its factorization.

210021202212212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312229858 (or 312229856 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 210021202212212 its reverse (212212202120012), we get a palindrome (422233404332224).

The spelling of 210021202212212 in words is "two hundred ten trillion, twenty-one billion, two hundred two million, two hundred twelve thousand, two hundred twelve".