221210012210 has 32 divisors (see below), whose sum is σ = 439609488192. Its totient is φ = 79470844480.

The previous prime is 221210012171. The next prime is 221210012251. The reversal of 221210012210 is 12210012122.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12105329 + ... + 12123588.

It is an arithmetic number, because the mean of its divisors is an integer number (13737796506).

Almost surely, 2^221210012210 is an apocalyptic number.

221210012210 is a deficient number, since it is larger than the sum of its proper divisors (218399475982).

221210012210 is a wasteful number, since it uses less digits than its factorization.

221210012210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24229018.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 221210012210 its reverse (12210012122), we get a palindrome (233420024332).

The spelling of 221210012210 in words is "two hundred twenty-one billion, two hundred ten million, twelve thousand, two hundred ten".