122722026761 has 4 divisors (see below), whose sum is σ = 122988235524. Its totient is φ = 122455818000.

The previous prime is 122722026751. The next prime is 122722026787. The reversal of 122722026761 is 167620227221.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 54747108361 + 67974918400 = 233981^2 + 260720^2 .

It is a cyclic number.

It is not a de Polignac number, because 122722026761 - 2³⁰ = 121648284937 is a prime.

It is a super-2 number, since 2×122722026761² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122722026731) 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, 133103690 + ... + 133104611.

It is an arithmetic number, because the mean of its divisors is an integer number (30747058881).

Almost surely, 2^122722026761 is an apocalyptic number.

It is an amenable number.

122722026761 is a deficient number, since it is larger than the sum of its proper divisors (266208763).

122722026761 is an equidigital number, since it uses as much as digits as its factorization.

122722026761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266208762.

The product of its (nonzero) digits is 56448, while the sum is 38.

The spelling of 122722026761 in words is "one hundred twenty-two billion, seven hundred twenty-two million, twenty-six thousand, seven hundred sixty-one".