102022021220 has 24 divisors (see below), whose sum is σ = 244852851264. Its totient is φ = 34978978656.

The previous prime is 102022021217. The next prime is 102022021301. The reversal of 102022021220 is 22120220201.

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 = 102022021195 and 102022021204.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 364364222 + ... + 364364501.

It is an arithmetic number, because the mean of its divisors is an integer number (10202202136).

Almost surely, 2^102022021220 is an apocalyptic number.

102022021220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102022021220 is an abundant number, since it is smaller than the sum of its proper divisors (142830830044).

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

102022021220 is a wasteful number, since it uses less digits than its factorization.

102022021220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 728728739 (or 728728737 counting only the distinct ones).

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

Adding to 102022021220 its reverse (22120220201), we get a palindrome (124142241421).

The spelling of 102022021220 in words is "one hundred two billion, twenty-two million, twenty-one thousand, two hundred twenty".