22202121020 has 24 divisors (see below), whose sum is σ = 48232195200. Its totient is φ = 8574612032.

The previous prime is 22202121013. The next prime is 22202121037. The reversal of 22202121020 is 2012120222.

It is a junction number, because it is equal to n+sod(n) for n = 22202120986 and 22202121004.

It is a congruent number.

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, 19139180 + ... + 19140339.

It is an arithmetic number, because the mean of its divisors is an integer number (2009674800).

Almost surely, 2^22202121020 is an apocalyptic number.

22202121020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22202121020 is an abundant number, since it is smaller than the sum of its proper divisors (26030074180).

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

22202121020 is a wasteful number, since it uses less digits than its factorization.

22202121020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38279557 (or 38279555 counting only the distinct ones).

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

Adding to 22202121020 its reverse (2012120222), we get a palindrome (24214241242).

The spelling of 22202121020 in words is "twenty-two billion, two hundred two million, one hundred twenty-one thousand, twenty".