1321012000332 has 72 divisors (see below), whose sum is σ = 3437113680000. Its totient is φ = 427481929728.

The previous prime is 1321012000309. The next prime is 1321012000337. The reversal of 1321012000332 is 2330002101231.

1321012000332 is a `hidden beast` number, since 1 + 3 + 210 + 120 + 0 + 0 + 332 = 666.

It is a super-2 number, since 2×1321012000332² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1321012000337) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 506332 + ... + 1702467.

It is an arithmetic number, because the mean of its divisors is an integer number (47737690000).

Almost surely, 2^{1321012000332} is an apocalyptic number.

1321012000332 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1321012000332 is an abundant number, since it is smaller than the sum of its proper divisors (2116101679668).

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

1321012000332 is a wasteful number, since it uses less digits than its factorization.

1321012000332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2209295 (or 2209290 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 1321012000332 its reverse (2330002101231), we get a palindrome (3651014101563).

The spelling of 1321012000332 in words is "one trillion, three hundred twenty-one billion, twelve million, three hundred thirty-two", and thus it is an aban number.