102001023020 has 24 divisors (see below), whose sum is σ = 230679237264. Its totient is φ = 37661916096.

The previous prime is 102001022999. The next prime is 102001023029. The reversal of 102001023020 is 20320100201.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 102001022992 and 102001023010.

It is not an unprimeable number, because it can be changed into a prime (102001023029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 196155554 + ... + 196156073.

It is an arithmetic number, because the mean of its divisors is an integer number (9611634886).

Almost surely, 2^102001023020 is an apocalyptic number.

102001023020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102001023020 is an abundant number, since it is smaller than the sum of its proper divisors (128678214244).

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

102001023020 is a wasteful number, since it uses less digits than its factorization.

102001023020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392311649 (or 392311647 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

Adding to 102001023020 its reverse (20320100201), we get a palindrome (122321123221).

The spelling of 102001023020 in words is "one hundred two billion, one million, twenty-three thousand, twenty".