12021012313 has 2 divisors, whose sum is σ = 12021012314. Its totient is φ = 12021012312.

The previous prime is 12021012301. The next prime is 12021012323. The reversal of 12021012313 is 31321012021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8347197769 + 3673814544 = 91363^2 + 60612^2 .

It is a cyclic number.

It is not a de Polignac number, because 12021012313 - 2²⁹ = 11484141401 is a prime.

It is not a weakly prime, because it can be changed into another prime (12021012323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6010506156 + 6010506157.

It is an arithmetic number, because the mean of its divisors is an integer number (6010506157).

Almost surely, 2^12021012313 is an apocalyptic number.

It is an amenable number.

12021012313 is a deficient number, since it is larger than the sum of its proper divisors (1).

12021012313 is an equidigital number, since it uses as much as digits as its factorization.

12021012313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 12021012313 its reverse (31321012021), we get a palindrome (43342024334).

The spelling of 12021012313 in words is "twelve billion, twenty-one million, twelve thousand, three hundred thirteen".