220121201010210 has 64 divisors (see below), whose sum is σ = 532750304120832. Its totient is φ = 58204015865856.

The previous prime is 220121201010203. The next prime is 220121201010223. The reversal of 220121201010210 is 12010102121022.

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 220121201010210.

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, 9485847 + ... + 23026586.

It is an arithmetic number, because the mean of its divisors is an integer number (8324223501888).

Almost surely, 2^{220121201010210} is an apocalyptic number.

220121201010210 is an abundant number, since it is smaller than the sum of its proper divisors (312629103110622).

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

220121201010210 is a wasteful number, since it uses less digits than its factorization.

220121201010210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32514347.

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

Adding to 220121201010210 its reverse (12010102121022), we get a palindrome (232131303131232).

The spelling of 220121201010210 in words is "two hundred twenty trillion, one hundred twenty-one billion, two hundred one million, ten thousand, two hundred ten".