122139645266 has 8 divisors (see below), whose sum is σ = 183922345980. Its totient is φ = 60832196608.

The previous prime is 122139645223. The next prime is 122139645293. The reversal of 122139645266 is 662546931221.

It can be written as a sum of positive squares in 2 ways, for example, as 122132775625 + 6869641 = 349475^2 + 2621^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 122139645266.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 118812371 + ... + 118813398.

Almost surely, 2^122139645266 is an apocalyptic number.

122139645266 is a deficient number, since it is larger than the sum of its proper divisors (61782700714).

122139645266 is a wasteful number, since it uses less digits than its factorization.

122139645266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237626028.

The product of its digits is 933120, while the sum is 47.

The spelling of 122139645266 in words is "one hundred twenty-two billion, one hundred thirty-nine million, six hundred forty-five thousand, two hundred sixty-six".