122512993 has 2 divisors, whose sum is σ = 122512994. Its totient is φ = 122512992.

The previous prime is 122512991. The next prime is 122513003. The reversal of 122512993 is 399215221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79780624 + 42732369 = 8932^2 + 6537^2 .

It is a cyclic number.

It is not a de Polignac number, because 122512993 - 2¹ = 122512991 is a prime.

Together with 122512991, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (122512991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61256496 + 61256497.

It is an arithmetic number, because the mean of its divisors is an integer number (61256497).

Almost surely, 2^122512993 is an apocalyptic number.

It is an amenable number.

122512993 is a deficient number, since it is larger than the sum of its proper divisors (1).

122512993 is an equidigital number, since it uses as much as digits as its factorization.

122512993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9720, while the sum is 34.

The square root of 122512993 is about 11068.5587589351. The cubic root of 122512993 is about 496.6617524750.

The spelling of 122512993 in words is "one hundred twenty-two million, five hundred twelve thousand, nine hundred ninety-three".