210021122221202 has 16 divisors (see below), whose sum is σ = 318569569186680. Its totient is φ = 103833239543808.

The previous prime is 210021122221123. The next prime is 210021122221217. The reversal of 210021122221202 is 202122221120012.

It can be written as a sum of positive squares in 4 ways, for example, as 121034520461761 + 88986601759441 = 11001569^2 + 9433271^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 493216127 + ... + 493641762.

Almost surely, 2^{210021122221202} is an apocalyptic number.

210021122221202 is a deficient number, since it is larger than the sum of its proper divisors (108548446965478).

210021122221202 is a wasteful number, since it uses less digits than its factorization.

210021122221202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 986859085.

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

Adding to 210021122221202 its reverse (202122221120012), we get a palindrome (412143343341214).

The spelling of 210021122221202 in words is "two hundred ten trillion, twenty-one billion, one hundred twenty-two million, two hundred twenty-one thousand, two hundred two".