122566343501 has 6 divisors (see below), whose sum is σ = 142577175150. Its totient is φ = 105056865816.

The previous prime is 122566343443. The next prime is 122566343509. The reversal of 122566343501 is 105343665221.

It can be written as a sum of positive squares in only one way, i.e., 113282057476 + 9284286025 = 336574^2 + 96355^2 .

It is not a de Polignac number, because 122566343501 - 2⁶ = 122566343437 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122566343509) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1250676926 + ... + 1250677023.

It is an arithmetic number, because the mean of its divisors is an integer number (23762862525).

Almost surely, 2^122566343501 is an apocalyptic number.

It is an amenable number.

122566343501 is a deficient number, since it is larger than the sum of its proper divisors (20010831649).

122566343501 is an equidigital number, since it uses as much as digits as its factorization.

122566343501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2501353963 (or 2501353956 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 38.

The spelling of 122566343501 in words is "one hundred twenty-two billion, five hundred sixty-six million, three hundred forty-three thousand, five hundred one".