1321352660412 has 36 divisors (see below), whose sum is σ = 3341076440520. Its totient is φ = 440320264992.

The previous prime is 1321352660323. The next prime is 1321352660417. The reversal of 1321352660412 is 2140662531231.

1321352660412 is a `hidden beast` number, since 1 + 3 + 2 + 1 + 35 + 2 + 6 + 604 + 12 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321352660417) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5319462 + ... + 5562317.

Almost surely, 2^{1321352660412} is an apocalyptic number.

1321352660412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1321352660412 is an abundant number, since it is smaller than the sum of its proper divisors (2019723780108).

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

1321352660412 is a wasteful number, since it uses less digits than its factorization.

1321352660412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10885162 (or 10885157 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The spelling of 1321352660412 in words is "one trillion, three hundred twenty-one billion, three hundred fifty-two million, six hundred sixty thousand, four hundred twelve".