122421267565861 has 12 divisors (see below), whose sum is σ = 134634294002656. Its totient is φ = 111232451115720.

The previous prime is 122421267565859. The next prime is 122421267565867. The reversal of 122421267565861 is 168565762124221.

It is not a de Polignac number, because 122421267565861 - 2¹ = 122421267565859 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122421267565796 and 122421267565805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122421267565867) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 270729105 + ... + 271180918.

Almost surely, 2^{122421267565861} is an apocalyptic number.

122421267565861 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

122421267565861 is a deficient number, since it is larger than the sum of its proper divisors (12213026436795).

122421267565861 is a wasteful number, since it uses less digits than its factorization.

122421267565861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 541911912 (or 541911901 counting only the distinct ones).

The product of its digits is 19353600, while the sum is 58.

The spelling of 122421267565861 in words is "one hundred twenty-two trillion, four hundred twenty-one billion, two hundred sixty-seven million, five hundred sixty-five thousand, eight hundred sixty-one".