102102222020 has 24 divisors (see below), whose sum is σ = 227027294424. Its totient is φ = 38438483456.

The previous prime is 102102221993. The next prime is 102102222029. The reversal of 102102222020 is 20222201201.

It can be written as a sum of positive squares in 4 ways, for example, as 20021118016 + 82081104004 = 141496^2 + 286498^2 .

It is a junction number, because it is equal to n+sod(n) for n = 102102221986 and 102102222004.

It is not an unprimeable number, because it can be changed into a prime (102102222029) 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, 150149987 + ... + 150150666.

It is an arithmetic number, because the mean of its divisors is an integer number (9459470601).

Almost surely, 2^102102222020 is an apocalyptic number.

102102222020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102102222020 is an abundant number, since it is smaller than the sum of its proper divisors (124925072404).

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

102102222020 is a wasteful number, since it uses less digits than its factorization.

102102222020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300300679 (or 300300677 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 102102222020 its reverse (20222201201), we get a palindrome (122324423221).

The spelling of 102102222020 in words is "one hundred two billion, one hundred two million, two hundred twenty-two thousand, twenty".