122866993 has 4 divisors (see below), whose sum is σ = 124881268. Its totient is φ = 120852720.

The previous prime is 122866967. The next prime is 122866999. The reversal of 122866993 is 399668221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 399668221 = 15233 ⋅26237.

It can be written as a sum of positive squares in 2 ways, for example, as 18173169 + 104693824 = 4263^2 + 10232^2 .

It is a cyclic number.

It is not a de Polignac number, because 122866993 - 2⁹ = 122866481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122866999) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1007046 + ... + 1007167.

It is an arithmetic number, because the mean of its divisors is an integer number (31220317).

Almost surely, 2^122866993 is an apocalyptic number.

It is an amenable number.

122866993 is a deficient number, since it is larger than the sum of its proper divisors (2014275).

122866993 is an equidigital number, since it uses as much as digits as its factorization.

122866993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2014274.

The product of its digits is 279936, while the sum is 46.

The square root of 122866993 is about 11084.5384658090. The cubic root of 122866993 is about 497.1396587654.

The spelling of 122866993 in words is "one hundred twenty-two million, eight hundred sixty-six thousand, nine hundred ninety-three".