102011210020 has 12 divisors (see below), whose sum is σ = 214223541084. Its totient is φ = 40804484000.

The previous prime is 102011209961. The next prime is 102011210053. The reversal of 102011210020 is 20012110201.

It can be written as a sum of positive squares in 2 ways, for example, as 27710263296 + 74300946724 = 166464^2 + 272582^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 102011209979 and 102011210006.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2550280231 + ... + 2550280270.

It is an arithmetic number, because the mean of its divisors is an integer number (17851961757).

Almost surely, 2^102011210020 is an apocalyptic number.

102011210020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102011210020 is an abundant number, since it is smaller than the sum of its proper divisors (112212331064).

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

102011210020 is a wasteful number, since it uses less digits than its factorization.

102011210020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5100560510 (or 5100560508 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 102011210020 its reverse (20012110201), we get a palindrome (122023320221).

It can be divided in two parts, 10201 and 1210020, that added together give a palindrome (1220221).

The spelling of 102011210020 in words is "one hundred two billion, eleven million, two hundred ten thousand, twenty".