220121220111112 has 32 divisors (see below), whose sum is σ = 415207186732800. Its totient is φ = 109400801517504.

The previous prime is 220121220111109. The next prime is 220121220111269. The reversal of 220121220111112 is 211111022121022.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 220121220111112.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92440683 + ... + 94791994.

It is an arithmetic number, because the mean of its divisors is an integer number (12975224585400).

Almost surely, 2^{220121220111112} is an apocalyptic number.

It is an amenable number.

220121220111112 is a deficient number, since it is larger than the sum of its proper divisors (195085966621688).

220121220111112 is a wasteful number, since it uses less digits than its factorization.

220121220111112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187233565 (or 187233561 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 220121220111112 its reverse (211111022121022), we get a palindrome (431232242232134).

The spelling of 220121220111112 in words is "two hundred twenty trillion, one hundred twenty-one billion, two hundred twenty million, one hundred eleven thousand, one hundred twelve".