100102030020 has 72 divisors (see below), whose sum is σ = 303689917440. Its totient is φ = 26689734720.

The previous prime is 100102030009. The next prime is 100102030099. The reversal of 100102030020 is 20030201001.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 100102029984 and 100102030011.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1223805 + ... + 1303035.

It is an arithmetic number, because the mean of its divisors is an integer number (4217915520).

Almost surely, 2^100102030020 is an apocalyptic number.

100102030020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100102030020 is an abundant number, since it is smaller than the sum of its proper divisors (203587887420).

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

100102030020 is a wasteful number, since it uses less digits than its factorization.

100102030020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86265 (or 86260 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

Adding to 100102030020 its reverse (20030201001), we get a palindrome (120132231021).

The spelling of 100102030020 in words is "one hundred billion, one hundred two million, thirty thousand, twenty".