122611426135261 has 4 divisors (see below), whose sum is σ = 140127344154592. Its totient is φ = 105095508115932.

The previous prime is 122611426135229. The next prime is 122611426135301. The reversal of 122611426135261 is 162531624116221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 122611426135261 - 2⁵ = 122611426135229 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 (122611426135661) 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, 8757959009655 + ... + 8757959009668.

It is an arithmetic number, because the mean of its divisors is an integer number (35031836038648).

Almost surely, 2^{122611426135261} is an apocalyptic number.

It is an amenable number.

122611426135261 is a deficient number, since it is larger than the sum of its proper divisors (17515918019331).

122611426135261 is an equidigital number, since it uses as much as digits as its factorization.

122611426135261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17515918019330.

The product of its digits is 207360, while the sum is 43.

The spelling of 122611426135261 in words is "one hundred twenty-two trillion, six hundred eleven billion, four hundred twenty-six million, one hundred thirty-five thousand, two hundred sixty-one".