12122021999959 has 2 divisors, whose sum is σ = 12122021999960. Its totient is φ = 12122021999958.

The previous prime is 12122021999957. The next prime is 12122022000007. The reversal of 12122021999959 is 95999912022121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12122021999959 - 2¹ = 12122021999957 is a prime.

Together with 12122021999957, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 12122021999897 and 12122021999906.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12122021999957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6061010999979 + 6061010999980.

It is an arithmetic number, because the mean of its divisors is an integer number (6061010999980).

Almost surely, 2^{12122021999959} is an apocalyptic number.

12122021999959 is a deficient number, since it is larger than the sum of its proper divisors (1).

12122021999959 is an equidigital number, since it uses as much as digits as its factorization.

12122021999959 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4723920, while the sum is 61.

The spelling of 12122021999959 in words is "twelve trillion, one hundred twenty-two billion, twenty-one million, nine hundred ninety-nine thousand, nine hundred fifty-nine".