221000022232122 has 32 divisors (see below), whose sum is σ = 505568470758912. Its totient is φ = 63089668144944.

The previous prime is 221000022232111. The next prime is 221000022232151. The reversal of 221000022232122 is 221232220000122.

It is a Harshad number since it is a multiple of its sum of digits (21).

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, 2216422468 + ... + 2216522175.

It is an arithmetic number, because the mean of its divisors is an integer number (15799014711216).

Almost surely, 2^{221000022232122} is an apocalyptic number.

221000022232122 is an abundant number, since it is smaller than the sum of its proper divisors (284568448526790).

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

221000022232122 is a wasteful number, since it uses less digits than its factorization.

221000022232122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4432945842.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 221000022232122 its reverse (221232220000122), we get a palindrome (442232242232244).

The spelling of 221000022232122 in words is "two hundred twenty-one trillion, twenty-two million, two hundred thirty-two thousand, one hundred twenty-two".