12630601021 has 2 divisors, whose sum is σ = 12630601022. Its totient is φ = 12630601020.

The previous prime is 12630601007. The next prime is 12630601051. The reversal of 12630601021 is 12010603621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11883180100 + 747420921 = 109010^2 + 27339^2 .

It is a cyclic number.

It is not a de Polignac number, because 12630601021 - 2⁵ = 12630600989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12630600983 and 12630601001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12630601051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6315300510 + 6315300511.

It is an arithmetic number, because the mean of its divisors is an integer number (6315300511).

Almost surely, 2^12630601021 is an apocalyptic number.

It is an amenable number.

12630601021 is a deficient number, since it is larger than the sum of its proper divisors (1).

12630601021 is an equidigital number, since it uses as much as digits as its factorization.

12630601021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 22.

The spelling of 12630601021 in words is "twelve billion, six hundred thirty million, six hundred one thousand, twenty-one".