1002000021231 has 12 divisors (see below), whose sum is σ = 1468495899416. Its totient is φ = 607272739920.

The previous prime is 1002000021167. The next prime is 1002000021241. The reversal of 1002000021231 is 1321200002001.

It is not a de Polignac number, because 1002000021231 - 2⁶ = 1002000021167 is a prime.

It is a super-2 number, since 2×1002000021231² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002000021241) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1380164956 + ... + 1380165681.

Almost surely, 2^{1002000021231} is an apocalyptic number.

1002000021231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1002000021231 is a deficient number, since it is larger than the sum of its proper divisors (466495878185).

1002000021231 is a wasteful number, since it uses less digits than its factorization.

1002000021231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2760330662 (or 2760330651 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 1002000021231 its reverse (1321200002001), we get a palindrome (2323200023232).

The spelling of 1002000021231 in words is "one trillion, two billion, twenty-one thousand, two hundred thirty-one".