101212221120 has 112 divisors (see below), whose sum is σ = 324661975008. Its totient is φ = 26711654400.

The previous prime is 101212221091. The next prime is 101212221167. The reversal of 101212221120 is 21122212101.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 101212221120.

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, 450331 + ... + 636570.

It is an arithmetic number, because the mean of its divisors is an integer number (2898767634).

Almost surely, 2^101212221120 is an apocalyptic number.

101212221120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101212221120 is an abundant number, since it is smaller than the sum of its proper divisors (223449753888).

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

101212221120 is a wasteful number, since it uses less digits than its factorization.

101212221120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1087018 (or 1087008 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 101212221120 its reverse (21122212101), we get a palindrome (122334433221).

The spelling of 101212221120 in words is "one hundred one billion, two hundred twelve million, two hundred twenty-one thousand, one hundred twenty".