1312232122220 has 24 divisors (see below), whose sum is σ = 2755800073824. Its totient is φ = 524871398016.

The previous prime is 1312232122219. The next prime is 1312232122303. The reversal of 1312232122220 is 222212322131.

It is a happy 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, 834392 + ... + 1822271.

It is an arithmetic number, because the mean of its divisors is an integer number (114825003076).

Almost surely, 2^{1312232122220} is an apocalyptic number.

1312232122220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1312232122220 is an abundant number, since it is smaller than the sum of its proper divisors (1443567951604).

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

1312232122220 is a wasteful number, since it uses less digits than its factorization.

1312232122220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2681369 (or 2681367 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 1312232122220 its reverse (222212322131), we get a palindrome (1534444444351).

The spelling of 1312232122220 in words is "one trillion, three hundred twelve billion, two hundred thirty-two million, one hundred twenty-two thousand, two hundred twenty".