210120021012210 has 64 divisors (see below), whose sum is σ = 507110429952000. Its totient is φ = 55718414212032.

The previous prime is 210120021012199. The next prime is 210120021012241. The reversal of 210120021012210 is 12210120021012.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 210120021012210.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1045798341 + ... + 1045999239.

It is an arithmetic number, because the mean of its divisors is an integer number (7923600468000).

Almost surely, 2^{210120021012210} is an apocalyptic number.

210120021012210 is an abundant number, since it is smaller than the sum of its proper divisors (296990408939790).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

210120021012210 is a wasteful number, since it uses less digits than its factorization.

210120021012210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395855.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 210120021012210 its reverse (12210120021012), we get a palindrome (222330141033222).

The spelling of 210120021012210 in words is "two hundred ten trillion, one hundred twenty billion, twenty-one million, twelve thousand, two hundred ten".