1000021002131 has 2 divisors, whose sum is σ = 1000021002132. Its totient is φ = 1000021002130.

The previous prime is 1000021002103. The next prime is 1000021002139. The reversal of 1000021002131 is 1312001200001.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1000021002131 - 2⁶ = 1000021002067 is a prime.

It is a super-3 number, since 3×1000021002131³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (1000021002139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500010501065 + 500010501066.

It is an arithmetic number, because the mean of its divisors is an integer number (500010501066).

Almost surely, 2^{1000021002131} is an apocalyptic number.

1000021002131 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000021002131 is an equidigital number, since it uses as much as digits as its factorization.

1000021002131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 1000021002131 its reverse (1312001200001), we get a palindrome (2312022202132).

The spelling of 1000021002131 in words is "one trillion, twenty-one million, two thousand, one hundred thirty-one".