22120012220 has 24 divisors (see below), whose sum is σ = 46458931344. Its totient is φ = 8846689536.

The previous prime is 22120012217. The next prime is 22120012231. The reversal of 22120012220 is 2221002122.

It is a super-2 number, since 2×22120012220² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22120012195 and 22120012204.

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, 61844 + ... + 219236.

It is an arithmetic number, because the mean of its divisors is an integer number (1935788806).

Almost surely, 2^22120012220 is an apocalyptic number.

22120012220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22120012220 is an abundant number, since it is smaller than the sum of its proper divisors (24338919124).

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

22120012220 is a wasteful number, since it uses less digits than its factorization.

22120012220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164429 (or 164427 counting only the distinct ones).

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

Adding to 22120012220 its reverse (2221002122), we get a palindrome (24341014342).

The spelling of 22120012220 in words is "twenty-two billion, one hundred twenty million, twelve thousand, two hundred twenty".