221122122110 has 8 divisors (see below), whose sum is σ = 398019819816. Its totient is φ = 88448848840.

The previous prime is 221122122097. The next prime is 221122122187. The reversal of 221122122110 is 11221221122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11056106096 + ... + 11056106115.

It is an arithmetic number, because the mean of its divisors is an integer number (49752477477).

Almost surely, 2^221122122110 is an apocalyptic number.

221122122110 is a deficient number, since it is larger than the sum of its proper divisors (176897697706).

221122122110 is a wasteful number, since it uses less digits than its factorization.

221122122110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22112212218.

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

Adding to 221122122110 its reverse (11221221122), we get a palindrome (232343343232).

It can be divided in two parts, 2 and 21122122110, that added together give a palindrome (21122122112).

The spelling of 221122122110 in words is "two hundred twenty-one billion, one hundred twenty-two million, one hundred twenty-two thousand, one hundred ten".