1312332020220 has 48 divisors (see below), whose sum is σ = 3957185786400. Its totient is φ = 323035574016.

The previous prime is 1312332020191. The next prime is 1312332020221. The reversal of 1312332020220 is 220202332131.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312332020221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 841237695 + ... + 841239254.

It is an arithmetic number, because the mean of its divisors is an integer number (82441370550).

Almost surely, 2^{1312332020220} is an apocalyptic number.

1312332020220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1312332020220 is an abundant number, since it is smaller than the sum of its proper divisors (2644853766180).

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

1312332020220 is a wasteful number, since it uses less digits than its factorization.

1312332020220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1682476974 (or 1682476972 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 1312332020220 its reverse (220202332131), we get a palindrome (1532534352351).

The spelling of 1312332020220 in words is "one trillion, three hundred twelve billion, three hundred thirty-two million, twenty thousand, two hundred twenty".