102102220122020 has 48 divisors (see below), whose sum is σ = 214631586267840. Its totient is φ = 40799571636096.

The previous prime is 102102220121999. The next prime is 102102220122031. The reversal of 102102220122020 is 20221022201201.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 102102220122020.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 986605199 + ... + 986708681.

It is an arithmetic number, because the mean of its divisors is an integer number (4471491380580).

Almost surely, 2^{102102220122020} is an apocalyptic number.

102102220122020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102102220122020 is an abundant number, since it is smaller than the sum of its proper divisors (112529366145820).

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

102102220122020 is a wasteful number, since it uses less digits than its factorization.

102102220122020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152924 (or 152922 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 102102220122020 its reverse (20221022201201), we get a palindrome (122323242323221).

The spelling of 102102220122020 in words is "one hundred two trillion, one hundred two billion, two hundred twenty million, one hundred twenty-two thousand, twenty".