1031425664221 has 12 divisors (see below), whose sum is σ = 1057465656832. Its totient is φ = 1005959632104.

The previous prime is 1031425664219. The next prime is 1031425664239. The reversal of 1031425664221 is 1224665241301.

It is not a de Polignac number, because 1031425664221 - 2¹ = 1031425664219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1031425664821) 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, 724455 + ... + 1608628.

Almost surely, 2^{1031425664221} is an apocalyptic number.

It is an amenable number.

1031425664221 is a deficient number, since it is larger than the sum of its proper divisors (26039992611).

1031425664221 is an equidigital number, since it uses as much as digits as its factorization.

1031425664221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2333328 (or 2333269 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 37.

The spelling of 1031425664221 in words is "one trillion, thirty-one billion, four hundred twenty-five million, six hundred sixty-four thousand, two hundred twenty-one".