221201102002210 has 128 divisors (see below), whose sum is σ = 448183848930048. Its totient is φ = 78557247014400.

The previous prime is 221201102002171. The next prime is 221201102002261. The reversal of 221201102002210 is 12200201102122.

It is a happy number.

It is a super-2 number, since 2×221201102002210² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7026479670 + ... + 7026511150.

It is an arithmetic number, because the mean of its divisors is an integer number (3501436319766).

Almost surely, 2^{221201102002210} is an apocalyptic number.

221201102002210 is an abundant number, since it is smaller than the sum of its proper divisors (226982746927838).

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

221201102002210 is a wasteful number, since it uses less digits than its factorization.

221201102002210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43841 (or 43819 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 221201102002210 its reverse (12200201102122), we get a palindrome (233401303104332).

The spelling of 221201102002210 in words is "two hundred twenty-one trillion, two hundred one billion, one hundred two million, two thousand, two hundred ten".