210021010021210 has 8 divisors (see below), whose sum is σ = 378037818038196. Its totient is φ = 84008404008480.

The previous prime is 210021010021183. The next prime is 210021010021231. The reversal of 210021010021210 is 12120010120012.

It can be written as a sum of positive squares in 2 ways, for example, as 206037516956049 + 3983493065161 = 14354007^2 + 1995869^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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, 10501050501051 + ... + 10501050501070.

Almost surely, 2^{210021010021210} is an apocalyptic number.

210021010021210 is a deficient number, since it is larger than the sum of its proper divisors (168016808016986).

210021010021210 is a wasteful number, since it uses less digits than its factorization.

210021010021210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21002101002128.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 210021010021210 its reverse (12120010120012), we get a palindrome (222141020141222).

The spelling of 210021010021210 in words is "two hundred ten trillion, twenty-one billion, ten million, twenty-one thousand, two hundred ten".