221021000120202 has 16 divisors (see below), whose sum is σ = 442044985341792. Its totient is φ = 73673169189840.

The previous prime is 221021000120183. The next prime is 221021000120203. The reversal of 221021000120202 is 202021000120122.

It is not an unprimeable number, because it can be changed into a prime (221021000120203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123416113 + ... + 125194164.

It is an arithmetic number, because the mean of its divisors is an integer number (27627811583862).

Almost surely, 2^{221021000120202} is an apocalyptic number.

221021000120202 is an abundant number, since it is smaller than the sum of its proper divisors (221023985221590).

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

221021000120202 is a wasteful number, since it uses less digits than its factorization.

221021000120202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248758453.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 221021000120202 its reverse (202021000120122), we get a palindrome (423042000240324).

The spelling of 221021000120202 in words is "two hundred twenty-one trillion, twenty-one billion, one hundred twenty thousand, two hundred two".