122657408206 has 4 divisors (see below), whose sum is σ = 183986112312. Its totient is φ = 61328704102.

The previous prime is 122657408201. The next prime is 122657408227. The reversal of 122657408206 is 602804756221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 602804756221 = 2411 ⋅250022711.

It is a super-2 number, since 2×122657408206² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122657408201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30664352050 + ... + 30664352053.

It is an arithmetic number, because the mean of its divisors is an integer number (45996528078).

Almost surely, 2^122657408206 is an apocalyptic number.

122657408206 is a deficient number, since it is larger than the sum of its proper divisors (61328704106).

122657408206 is an equidigital number, since it uses as much as digits as its factorization.

122657408206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61328704105.

The product of its (nonzero) digits is 322560, while the sum is 43.

The spelling of 122657408206 in words is "one hundred twenty-two billion, six hundred fifty-seven million, four hundred eight thousand, two hundred six".