102001092020 has 24 divisors (see below), whose sum is σ = 214593910944. Its totient is φ = 40725842976.

The previous prime is 102001092019. The next prime is 102001092023. The reversal of 102001092020 is 20290100201.

It is a super-3 number, since 3×102001092020³ (a number of 34 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 102001092020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102001092023) 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, 4650902 + ... + 4672781.

It is an arithmetic number, because the mean of its divisors is an integer number (8941412956).

Almost surely, 2^102001092020 is an apocalyptic number.

102001092020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102001092020 is an abundant number, since it is smaller than the sum of its proper divisors (112592818924).

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

102001092020 is a wasteful number, since it uses less digits than its factorization.

102001092020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9324239 (or 9324237 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 102001092020 its reverse (20290100201), we get a palindrome (122291192221).

The spelling of 102001092020 in words is "one hundred two billion, one million, ninety-two thousand, twenty".