100220101220 has 24 divisors (see below), whose sum is σ = 212429153664. Its totient is φ = 39713385056.

The previous prime is 100220101109. The next prime is 100220101243. The reversal of 100220101220 is 22101022001.

It is a happy number.

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, 23413772 + ... + 23418051.

It is an arithmetic number, because the mean of its divisors is an integer number (8851214736).

Almost surely, 2^100220101220 is an apocalyptic number.

100220101220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100220101220 is an abundant number, since it is smaller than the sum of its proper divisors (112209052444).

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

100220101220 is a wasteful number, since it uses less digits than its factorization.

100220101220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46831939 (or 46831937 counting only the distinct ones).

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

Adding to 100220101220 its reverse (22101022001), we get a palindrome (122321123221).

The spelling of 100220101220 in words is "one hundred billion, two hundred twenty million, one hundred one thousand, two hundred twenty".