1200020311332 has 30 divisors (see below), whose sum is σ = 3137090135718. Its totient is φ = 400006770336.

The previous prime is 1200020311297. The next prime is 1200020311337. The reversal of 1200020311332 is 2331130200021.

1200020311332 is a `hidden beast` number, since 1 + 2 + 0 + 0 + 0 + 20 + 311 + 332 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1195663519296 + 4356792036 = 1093464^2 + 66006^2 .

It is a super-2 number, since 2×1200020311332² (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 (1200020311337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1851882873 + ... + 1851883520.

Almost surely, 2^{1200020311332} is an apocalyptic number.

1200020311332 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1200020311332 is an abundant number, since it is smaller than the sum of its proper divisors (1937069824386).

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

1200020311332 is a wasteful number, since it uses less digits than its factorization.

1200020311332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3703766409 (or 3703766398 counting only the distinct ones).

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

Adding to 1200020311332 its reverse (2331130200021), we get a palindrome (3531150511353).

The spelling of 1200020311332 in words is "one trillion, two hundred billion, twenty million, three hundred eleven thousand, three hundred thirty-two".