221002120211210 has 64 divisors (see below), whose sum is σ = 453702471167232. Its totient is φ = 76887953657856.

The previous prime is 221002120211183. The next prime is 221002120211239. The reversal of 221002120211210 is 12112021200122.

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, 551394839 + ... + 551795498.

It is an arithmetic number, because the mean of its divisors is an integer number (7089101111988).

Almost surely, 2^{221002120211210} is an apocalyptic number.

221002120211210 is an abundant number, since it is smaller than the sum of its proper divisors (232700350956022).

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

221002120211210 is a wasteful number, since it uses less digits than its factorization.

221002120211210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1103190447.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 221002120211210 its reverse (12112021200122), we get a palindrome (233114141411332).

The spelling of 221002120211210 in words is "two hundred twenty-one trillion, two billion, one hundred twenty million, two hundred eleven thousand, two hundred ten".