100220121012 has 48 divisors (see below), whose sum is σ = 270111989952. Its totient is φ = 28583278080.

The previous prime is 100220120951. The next prime is 100220121013. The reversal of 100220121012 is 210121022001.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100220121013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22328443 + ... + 22332930.

It is an arithmetic number, because the mean of its divisors is an integer number (5627333124).

Almost surely, 2^100220121012 is an apocalyptic number.

100220121012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

100220121012 is an abundant number, since it is smaller than the sum of its proper divisors (169891868940).

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

100220121012 is a wasteful number, since it uses less digits than its factorization.

100220121012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44661408 (or 44661406 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 100220121012 its reverse (210121022001), we get a palindrome (310341143013).

The spelling of 100220121012 in words is "one hundred billion, two hundred twenty million, one hundred twenty-one thousand, twelve".