12222011957 has 2 divisors, whose sum is σ = 12222011958. Its totient is φ = 12222011956.

The previous prime is 12222011951. The next prime is 12222012001. The reversal of 12222011957 is 75911022221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6744679876 + 5477332081 = 82126^2 + 74009^2 .

It is a cyclic number.

It is not a de Polignac number, because 12222011957 - 2⁴ = 12222011941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12222011951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6111005978 + 6111005979.

It is an arithmetic number, because the mean of its divisors is an integer number (6111005979).

Almost surely, 2^12222011957 is an apocalyptic number.

It is an amenable number.

12222011957 is a deficient number, since it is larger than the sum of its proper divisors (1).

12222011957 is an equidigital number, since it uses as much as digits as its factorization.

12222011957 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 32.

The spelling of 12222011957 in words is "twelve billion, two hundred twenty-two million, eleven thousand, nine hundred fifty-seven".