312010001021 has 2 divisors, whose sum is σ = 312010001022. Its totient is φ = 312010001020.

The previous prime is 312010000993. The next prime is 312010001059. The reversal of 312010001021 is 120100010213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 299579980921 + 12430020100 = 547339^2 + 111490^2 .

It is a cyclic number.

It is not a de Polignac number, because 312010001021 - 2³⁴ = 294830131837 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 312010000993 and 312010001011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312010001071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156005000510 + 156005000511.

It is an arithmetic number, because the mean of its divisors is an integer number (156005000511).

Almost surely, 2^312010001021 is an apocalyptic number.

It is an amenable number.

312010001021 is a deficient number, since it is larger than the sum of its proper divisors (1).

312010001021 is an equidigital number, since it uses as much as digits as its factorization.

312010001021 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 11.

Adding to 312010001021 its reverse (120100010213), we get a palindrome (432110011234).

It can be divided in two parts, 3 and 12010001021, that multiplied together give a palindrome (36030003063).

The spelling of 312010001021 in words is "three hundred twelve billion, ten million, one thousand, twenty-one".