1002155332131 has 12 divisors (see below), whose sum is σ = 1501170950552. Its totient is φ = 668103554592.

The previous prime is 1002155332127. The next prime is 1002155332159. The reversal of 1002155332131 is 1312335512001.

1002155332131 is a `hidden beast` number, since 100 + 2 + 1 + 5 + 533 + 21 + 3 + 1 = 666.

It is not a de Polignac number, because 1002155332131 - 2² = 1002155332127 is a prime.

It is a super-2 number, since 2×1002155332131² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1002155332095 and 1002155332104.

It is not an unprimeable number, because it can be changed into a prime (1002155332111) 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 11 ways as a sum of consecutive naturals, for example, 2062047766 + ... + 2062048251.

Almost surely, 2^{1002155332131} is an apocalyptic number.

1002155332131 is a deficient number, since it is larger than the sum of its proper divisors (499015618421).

1002155332131 is an frugal number, since it uses more digits than its factorization.

1002155332131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4124096032 (or 4124096020 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The spelling of 1002155332131 in words is "one trillion, two billion, one hundred fifty-five million, three hundred thirty-two thousand, one hundred thirty-one".