1312022222120 has 64 divisors (see below), whose sum is σ = 3085283139840. Its totient is φ = 501195340800.

The previous prime is 1312022222113. The next prime is 1312022222267. The reversal of 1312022222120 is 212222202131.

It is a super-2 number, since 2×1312022222120² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1312022222092 and 1312022222101.

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, 549521 + ... + 1710560.

It is an arithmetic number, because the mean of its divisors is an integer number (48207549060).

Almost surely, 2^{1312022222120} is an apocalyptic number.

1312022222120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1312022222120 is an abundant number, since it is smaller than the sum of its proper divisors (1773260917720).

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

1312022222120 is a wasteful number, since it uses less digits than its factorization.

1312022222120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2260746 (or 2260742 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 1312022222120 its reverse (212222202131), we get a palindrome (1524244424251).

The spelling of 1312022222120 in words is "one trillion, three hundred twelve billion, twenty-two million, two hundred twenty-two thousand, one hundred twenty".