122656210727 has 4 divisors (see below), whose sum is σ = 122663198616. Its totient is φ = 122649222840.

The previous prime is 122656210709. The next prime is 122656210759. The reversal of 122656210727 is 727012656221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 727012656221 = 158699 ⋅4581079.

It is a cyclic number.

It is not a de Polignac number, because 122656210727 - 2²² = 122652016423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122656210427) 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, 3467549 + ... + 3502742.

It is an arithmetic number, because the mean of its divisors is an integer number (30665799654).

Almost surely, 2^122656210727 is an apocalyptic number.

122656210727 is a deficient number, since it is larger than the sum of its proper divisors (6987889).

122656210727 is an equidigital number, since it uses as much as digits as its factorization.

122656210727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6987888.

The product of its (nonzero) digits is 141120, while the sum is 41.

Adding to 122656210727 its reverse (727012656221), we get a palindrome (849668866948).

The spelling of 122656210727 in words is "one hundred twenty-two billion, six hundred fifty-six million, two hundred ten thousand, seven hundred twenty-seven".