100120354220 has 12 divisors (see below), whose sum is σ = 210252743904. Its totient is φ = 40048141680.

The previous prime is 100120354199. The next prime is 100120354231. The reversal of 100120354220 is 22453021001.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 5006017711 = 100120354220 / (1 + 0 + 0 + 1 + 2 + 0 + 3 + 5 + 4 + 2 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 100120354192 and 100120354201.

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, 2503008836 + ... + 2503008875.

It is an arithmetic number, because the mean of its divisors is an integer number (17521061992).

Almost surely, 2^100120354220 is an apocalyptic number.

100120354220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100120354220 is an abundant number, since it is smaller than the sum of its proper divisors (110132389684).

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

100120354220 is a wasteful number, since it uses less digits than its factorization.

100120354220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5006017720 (or 5006017718 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

Adding to 100120354220 its reverse (22453021001), we get a palindrome (122573375221).

The spelling of 100120354220 in words is "one hundred billion, one hundred twenty million, three hundred fifty-four thousand, two hundred twenty".