1000002001231 has 2 divisors, whose sum is σ = 1000002001232. Its totient is φ = 1000002001230.

The previous prime is 1000002001133. The next prime is 1000002001249. The reversal of 1000002001231 is 1321002000001.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1000002001231 is a prime.

It is a super-2 number, since 2×1000002001231² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1000002001331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500001000615 + 500001000616.

It is an arithmetic number, because the mean of its divisors is an integer number (500001000616).

Almost surely, 2^{1000002001231} is an apocalyptic number.

1000002001231 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000002001231 is an equidigital number, since it uses as much as digits as its factorization.

1000002001231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12, while the sum is 10.

Adding to 1000002001231 its reverse (1321002000001), we get a palindrome (2321004001232).

The spelling of 1000002001231 in words is "one trillion, two million, one thousand, two hundred thirty-one".