210021200122210 has 16 divisors (see below), whose sum is σ = 378039571570296. Its totient is φ = 84008166415488.

The previous prime is 210021200122163. The next prime is 210021200122267. The reversal of 210021200122210 is 12221002120012.

It is a happy number.

210021200122210 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 73607700137049 + 136413499985161 = 8579493^2 + 11679619^2 .

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, 36382017 + ... + 41757556.

Almost surely, 2^{210021200122210} is an apocalyptic number.

210021200122210 is a deficient number, since it is larger than the sum of its proper divisors (168018371448086).

210021200122210 is a wasteful number, since it uses less digits than its factorization.

210021200122210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78408357.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 210021200122210 its reverse (12221002120012), we get a palindrome (222242202242222).

The spelling of 210021200122210 in words is "two hundred ten trillion, twenty-one billion, two hundred million, one hundred twenty-two thousand, two hundred ten".