122638203 has 12 divisors (see below), whose sum is σ = 177426288. Its totient is φ = 81628560.

The previous prime is 122638199. The next prime is 122638247. The reversal of 122638203 is 302836221.

122638203 is a `hidden beast` number, since 1 + 2 + 2 + 638 + 20 + 3 = 666.

It is not a de Polignac number, because 122638203 - 2² = 122638199 is a prime.

It is not an unprimeable number, because it can be changed into a prime (122638253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4708 + ... + 16353.

It is an arithmetic number, because the mean of its divisors is an integer number (14785524).

Almost surely, 2^122638203 is an apocalyptic number.

122638203 is a deficient number, since it is larger than the sum of its proper divisors (54788085).

122638203 is a wasteful number, since it uses less digits than its factorization.

122638203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21714 (or 21711 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 122638203 is about 11074.2134257924. The cubic root of 122638203 is about 496.8308932962.

The spelling of 122638203 in words is "one hundred twenty-two million, six hundred thirty-eight thousand, two hundred three".