22121130220 has 48 divisors (see below), whose sum is σ = 53181354240. Its totient is φ = 7571438784.

The previous prime is 22121130169. The next prime is 22121130259. The reversal of 22121130220 is 2203112122.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 22121130194 and 22121130203.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52410 + ... + 216769.

It is an arithmetic number, because the mean of its divisors is an integer number (1107944880).

Almost surely, 2^22121130220 is an apocalyptic number.

22121130220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22121130220 is an abundant number, since it is smaller than the sum of its proper divisors (31060224020).

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

22121130220 is a wasteful number, since it uses less digits than its factorization.

22121130220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269782 (or 269780 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 22121130220 its reverse (2203112122), we get a palindrome (24324242342).

The spelling of 22121130220 in words is "twenty-two billion, one hundred twenty-one million, one hundred thirty thousand, two hundred twenty".