221012120012210 has 32 divisors (see below), whose sum is σ = 407584243991232. Its totient is φ = 86240578737600.

The previous prime is 221012120012179. The next prime is 221012120012251. The reversal of 221012120012210 is 12210021210122.

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, 322105016 + ... + 322790435.

It is an arithmetic number, because the mean of its divisors is an integer number (12737007624726).

Almost surely, 2^{221012120012210} is an apocalyptic number.

221012120012210 is a deficient number, since it is larger than the sum of its proper divisors (186572123979022).

221012120012210 is a wasteful number, since it uses less digits than its factorization.

221012120012210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644896298.

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

Adding to 221012120012210 its reverse (12210021210122), we get a palindrome (233222141222332).

The spelling of 221012120012210 in words is "two hundred twenty-one trillion, twelve billion, one hundred twenty million, twelve thousand, two hundred ten".