100990120020 has 48 divisors (see below), whose sum is σ = 282819784128. Its totient is φ = 26926179840.

The previous prime is 100990120003. The next prime is 100990120027. The reversal of 100990120020 is 20021099001.

100990120020 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100990120027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 227292 + ... + 503628.

It is an arithmetic number, because the mean of its divisors is an integer number (5892078836).

Almost surely, 2^100990120020 is an apocalyptic number.

100990120020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100990120020 is an abundant number, since it is smaller than the sum of its proper divisors (181829664108).

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

100990120020 is a wasteful number, since it uses less digits than its factorization.

100990120020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282440 (or 282438 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 24.

The spelling of 100990120020 in words is "one hundred billion, nine hundred ninety million, one hundred twenty thousand, twenty".