102020102021020 has 24 divisors (see below), whose sum is σ = 214280533601568. Its totient is φ = 40800741883200.

The previous prime is 102020102021011. The next prime is 102020102021029. The reversal of 102020102021020 is 20120201020201.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (102020102021011) and next prime (102020102021029).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102020102021029) 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, 456068211 + ... + 456291850.

It is an arithmetic number, because the mean of its divisors is an integer number (8928355566732).

Almost surely, 2^{102020102021020} is an apocalyptic number.

102020102021020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102020102021020 is an abundant number, since it is smaller than the sum of its proper divisors (112260431580548).

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

102020102021020 is a wasteful number, since it uses less digits than its factorization.

102020102021020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 912365661 (or 912365659 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 102020102021020 its reverse (20120201020201), we get a palindrome (122140303041221).

The spelling of 102020102021020 in words is "one hundred two trillion, twenty billion, one hundred two million, twenty-one thousand, twenty".