122306609261 has 4 divisors (see below), whose sum is σ = 123449661792. Its totient is φ = 121163556732.

The previous prime is 122306609251. The next prime is 122306609267. The reversal of 122306609261 is 162906603221.

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, and also an emirpimes, since its reverse is a distinct semiprime: 162906603221 = 103 ⋅1581617507.

It is a cyclic number.

It is not a de Polignac number, because 122306609261 - 2²² = 122302414957 is a prime.

It is a super-2 number, since 2×122306609261² (a number of 23 digits) contains 22 as substring.

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 (122306609267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 571526105 + ... + 571526318.

It is an arithmetic number, because the mean of its divisors is an integer number (30862415448).

Almost surely, 2^122306609261 is an apocalyptic number.

It is an amenable number.

122306609261 is a deficient number, since it is larger than the sum of its proper divisors (1143052531).

122306609261 is a wasteful number, since it uses less digits than its factorization.

122306609261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1143052530.

The product of its (nonzero) digits is 46656, while the sum is 38.

The spelling of 122306609261 in words is "one hundred twenty-two billion, three hundred six million, six hundred nine thousand, two hundred sixty-one".