102010002020 has 24 divisors (see below), whose sum is σ = 216342008568. Its totient is φ = 40400000000.

The previous prime is 102010002011. The next prime is 102010002049. The reversal of 102010002020 is 20200010201.

It can be written as a sum of positive squares in 4 ways, for example, as 15561065536 + 86448936484 = 124744^2 + 294022^2 .

It is a junction number, because it is equal to n+sod(n) for n = 102010001989 and 102010002007.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25247981 + ... + 25252020.

It is an arithmetic number, because the mean of its divisors is an integer number (9014250357).

Almost surely, 2^102010002020 is an apocalyptic number.

102010002020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102010002020 is an abundant number, since it is smaller than the sum of its proper divisors (114332006548).

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

102010002020 is a wasteful number, since it uses less digits than its factorization.

102010002020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50500111 (or 50500109 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 8.

Adding to 102010002020 its reverse (20200010201), we get a palindrome (122210012221).

The spelling of 102010002020 in words is "one hundred two billion, ten million, two thousand, twenty".