1201311021132 has 72 divisors (see below), whose sum is σ = 3171578701200. Its totient is φ = 383010726528.

The previous prime is 1201311021089. The next prime is 1201311021151. The reversal of 1201311021132 is 2311201131021.

1201311021132 is a `hidden beast` number, since 1 + 201 + 311 + 0 + 21 + 132 = 666.

It is a super-2 number, since 2×1201311021132² (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 an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7564507 + ... + 7721682.

Almost surely, 2^{1201311021132} is an apocalyptic number.

1201311021132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1201311021132 is an abundant number, since it is smaller than the sum of its proper divisors (1970267680068).

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

1201311021132 is a wasteful number, since it uses less digits than its factorization.

1201311021132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15286295 (or 15286290 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 1201311021132 its reverse (2311201131021), we get a palindrome (3512512152153).

The spelling of 1201311021132 in words is "one trillion, two hundred one billion, three hundred eleven million, twenty-one thousand, one hundred thirty-two".