102020211101220 has 96 divisors (see below), whose sum is σ = 286538087136000. Its totient is φ = 27121471916544.

The previous prime is 102020211101177. The next prime is 102020211101227. The reversal of 102020211101220 is 22101112020201.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 102020211101220.

It is not an unprimeable number, because it can be changed into a prime (102020211101227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 95099586 + ... + 96166374.

It is an arithmetic number, because the mean of its divisors is an integer number (2984771741000).

Almost surely, 2^{102020211101220} is an apocalyptic number.

102020211101220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102020211101220 is an abundant number, since it is smaller than the sum of its proper divisors (184517876034780).

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

102020211101220 is a wasteful number, since it uses less digits than its factorization.

102020211101220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1071717 (or 1071715 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 102020211101220 its reverse (22101112020201), we get a palindrome (124121323121421).

The spelling of 102020211101220 in words is "one hundred two trillion, twenty billion, two hundred eleven million, one hundred one thousand, two hundred twenty".