12000949973 has 2 divisors, whose sum is σ = 12000949974. Its totient is φ = 12000949972.

The previous prime is 12000949957. The next prime is 12000949981. The reversal of 12000949973 is 37994900021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11613726289 + 387223684 = 107767^2 + 19678^2 .

It is a cyclic number.

It is not a de Polignac number, because 12000949973 - 2⁴ = 12000949957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12000949903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6000474986 + 6000474987.

It is an arithmetic number, because the mean of its divisors is an integer number (6000474987).

Almost surely, 2^12000949973 is an apocalyptic number.

It is an amenable number.

12000949973 is a deficient number, since it is larger than the sum of its proper divisors (1).

12000949973 is an equidigital number, since it uses as much as digits as its factorization.

12000949973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 122472, while the sum is 44.

The spelling of 12000949973 in words is "twelve billion, nine hundred forty-nine thousand, nine hundred seventy-three".