100331212020 has 48 divisors (see below), whose sum is σ = 302537195520. Its totient is φ = 24696913536.

The previous prime is 100331211977. The next prime is 100331212081. The reversal of 100331212020 is 20212133001.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64314100 + ... + 64315659.

It is an arithmetic number, because the mean of its divisors is an integer number (6302858240).

Almost surely, 2^100331212020 is an apocalyptic number.

100331212020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100331212020 is an abundant number, since it is smaller than the sum of its proper divisors (202205983500).

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

100331212020 is a wasteful number, since it uses less digits than its factorization.

100331212020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128629784 (or 128629782 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 100331212020 its reverse (20212133001), we get a palindrome (120543345021).

The spelling of 100331212020 in words is "one hundred billion, three hundred thirty-one million, two hundred twelve thousand, twenty".