102220212021 has 64 divisors (see below), whose sum is σ = 150349766400. Its totient is φ = 61545609216.

The previous prime is 102220211987. The next prime is 102220212079. The reversal of 102220212021 is 120212022201.

It is not a de Polignac number, because 102220212021 - 2⁷ = 102220211893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102220212221) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 24169135 + ... + 24173363.

It is an arithmetic number, because the mean of its divisors is an integer number (2349215100).

Almost surely, 2^102220212021 is an apocalyptic number.

It is an amenable number.

102220212021 is a deficient number, since it is larger than the sum of its proper divisors (48129554379).

102220212021 is a wasteful number, since it uses less digits than its factorization.

102220212021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4518.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 102220212021 its reverse (120212022201), we get a palindrome (222432234222).

The spelling of 102220212021 in words is "one hundred two billion, two hundred twenty million, two hundred twelve thousand, twenty-one".