212221110100210 has 32 divisors (see below), whose sum is σ = 383206047562800. Its totient is φ = 84620353628160.

The previous prime is 212221110100187. The next prime is 212221110100267. The reversal of 212221110100210 is 12001011122212.

It can be written as a sum of positive squares in 8 ways, for example, as 71614092425121 + 140607017675089 = 8462511^2 + 11857783^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18160675 + ... + 27463654.

Almost surely, 2^{212221110100210} is an apocalyptic number.

212221110100210 is a deficient number, since it is larger than the sum of its proper divisors (170984937462590).

212221110100210 is a wasteful number, since it uses less digits than its factorization.

212221110100210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45625806.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 212221110100210 its reverse (12001011122212), we get a palindrome (224222121222422).

The spelling of 212221110100210 in words is "two hundred twelve trillion, two hundred twenty-one billion, one hundred ten million, one hundred thousand, two hundred ten".