220121222222110 has 64 divisors (see below), whose sum is σ = 451829062656000. Its totient is φ = 76481481772800.

The previous prime is 220121222221969. The next prime is 220121222222117. The reversal of 220121222222110 is 11222222121022.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220121222222117) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 408285535 + ... + 408824314.

It is an arithmetic number, because the mean of its divisors is an integer number (7059829104000).

Almost surely, 2^{220121222222110} is an apocalyptic number.

220121222222110 is an abundant number, since it is smaller than the sum of its proper divisors (231707840433890).

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

220121222222110 is a wasteful number, since it uses less digits than its factorization.

220121222222110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 817109977.

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 220121222222110 its reverse (11222222121022), we get a palindrome (231343444343132).

The spelling of 220121222222110 in words is "two hundred twenty trillion, one hundred twenty-one billion, two hundred twenty-two million, two hundred twenty-two thousand, one hundred ten".