22012222120 has 64 divisors (see below), whose sum is σ = 56616537600. Its totient is φ = 7545223680.

The previous prime is 22012222103. The next prime is 22012222139. The reversal of 22012222120 is 2122221022.

It is a junction number, because it is equal to n+sod(n) for n = 22012222094 and 22012222103.

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, 1698465 + ... + 1711375.

It is an arithmetic number, because the mean of its divisors is an integer number (884633400).

Almost surely, 2^22012222120 is an apocalyptic number.

22012222120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22012222120 is an abundant number, since it is smaller than the sum of its proper divisors (34604315480).

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

22012222120 is a wasteful number, since it uses less digits than its factorization.

22012222120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19018 (or 19014 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 22012222120 its reverse (2122221022), we get a palindrome (24134443142).

It can be divided in two parts, 220122 and 22120, that added together give a palindrome (242242).

The spelling of 22012222120 in words is "twenty-two billion, twelve million, two hundred twenty-two thousand, one hundred twenty".