102221112020 has 12 divisors (see below), whose sum is σ = 214664335284. Its totient is φ = 40888444800.

The previous prime is 102221112017. The next prime is 102221112023. The reversal of 102221112020 is 20211122201.

It is an interprime number because it is at equal distance from previous prime (102221112017) and next prime (102221112023).

It can be written as a sum of positive squares in 2 ways, for example, as 14228195524 + 87992916496 = 119282^2 + 296636^2 .

It is a junction number, because it is equal to n+sod(n) for n = 102221111986 and 102221112004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102221112023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2555527781 + ... + 2555527820.

It is an arithmetic number, because the mean of its divisors is an integer number (17888694607).

Almost surely, 2^102221112020 is an apocalyptic number.

102221112020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102221112020 is an abundant number, since it is smaller than the sum of its proper divisors (112443223264).

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

102221112020 is a wasteful number, since it uses less digits than its factorization.

102221112020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5111055610 (or 5111055608 counting only the distinct ones).

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

Adding to 102221112020 its reverse (20211122201), we get a palindrome (122432234221).

The spelling of 102221112020 in words is "one hundred two billion, two hundred twenty-one million, one hundred twelve thousand, twenty".