1200331131021 has 24 divisors (see below), whose sum is σ = 1902756832704. Its totient is φ = 723117274560.

The previous prime is 1200331130983. The next prime is 1200331131029. The reversal of 1200331131021 is 1201311330021.

1200331131021 is a `hidden beast` number, since 1 + 2 + 0 + 0 + 331 + 1 + 310 + 21 = 666.

It is not a de Polignac number, because 1200331131021 - 2¹³ = 1200331122829 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1200331130985 and 1200331131003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200331131029) 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, 36284536 + ... + 36317601.

It is an arithmetic number, because the mean of its divisors is an integer number (79281534696).

Almost surely, 2^{1200331131021} is an apocalyptic number.

1200331131021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1200331131021 is a deficient number, since it is larger than the sum of its proper divisors (702425701683).

1200331131021 is a wasteful number, since it uses less digits than its factorization.

1200331131021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72602321 (or 72602318 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 1200331131021 its reverse (1201311330021), we get a palindrome (2401642461042).

The spelling of 1200331131021 in words is "one trillion, two hundred billion, three hundred thirty-one million, one hundred thirty-one thousand, twenty-one".