102201021012020 has 96 divisors (see below), whose sum is σ = 253202503335936. Its totient is φ = 33908982825600.

The previous prime is 102201021012019. The next prime is 102201021012047. The reversal of 102201021012020 is 20210120102201.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 102201021011986 and 102201021012004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 149262569 + ... + 149945711.

It is an arithmetic number, because the mean of its divisors is an integer number (2637526076416).

Almost surely, 2^{102201021012020} is an apocalyptic number.

102201021012020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102201021012020 is an abundant number, since it is smaller than the sum of its proper divisors (151001482323916).

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

102201021012020 is a wasteful number, since it uses less digits than its factorization.

102201021012020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 717661 (or 717659 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 102201021012020 its reverse (20210120102201), we get a palindrome (122411141114221).

The spelling of 102201021012020 in words is "one hundred two trillion, two hundred one billion, twenty-one million, twelve thousand, twenty".