100012120220 has 12 divisors (see below), whose sum is σ = 210025452504. Its totient is φ = 40004848080.

The previous prime is 100012120199. The next prime is 100012120231. The reversal of 100012120220 is 22021210001.

It is a happy number.

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, 2500302986 + ... + 2500303025.

It is an arithmetic number, because the mean of its divisors is an integer number (17502121042).

Almost surely, 2^100012120220 is an apocalyptic number.

100012120220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100012120220 is an abundant number, since it is smaller than the sum of its proper divisors (110013332284).

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

100012120220 is a wasteful number, since it uses less digits than its factorization.

100012120220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5000606020 (or 5000606018 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 100012120220 its reverse (22021210001), we get a palindrome (122033330221).

The spelling of 100012120220 in words is "one hundred billion, twelve million, one hundred twenty thousand, two hundred twenty".