22120012222120 has 32 divisors (see below), whose sum is σ = 49770251509320. Its totient is φ = 8847965064960.

The previous prime is 22120012222093. The next prime is 22120012222177. The reversal of 22120012222120 is 2122221002122.

It can be written as a sum of positive squares in 4 ways, for example, as 7034727117636 + 15085285104484 = 2652306^2 + 3883978^2 .

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, 8743330 + ... + 10985710.

Almost surely, 2^{22120012222120} is an apocalyptic number.

22120012222120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22120012222120 is an abundant number, since it is smaller than the sum of its proper divisors (27650239287200).

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

22120012222120 is a wasteful number, since it uses less digits than its factorization.

22120012222120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2489005 (or 2489001 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 22120012222120 its reverse (2122221002122), we get a palindrome (24242233224242).

The spelling of 22120012222120 in words is "twenty-two trillion, one hundred twenty billion, twelve million, two hundred twenty-two thousand, one hundred twenty".