122345122052421 has 12 divisors (see below), whose sum is σ = 180480747425472. Its totient is φ = 79828022899176.

The previous prime is 122345122052411. The next prime is 122345122052449. The reversal of 122345122052421 is 124250221543221.

122345122052421 is a `hidden beast` number, since 1 + 2 + 2 + 3 + 4 + 5 + 1 + 220 + 5 + 2 + 421 = 666.

It is not a de Polignac number, because 122345122052421 - 2³³ = 122336532117829 is a prime.

It is a super-2 number, since 2×122345122052421² (a number of 29 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122345122052411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 144615983091 + ... + 144615983936.

It is an arithmetic number, because the mean of its divisors is an integer number (15040062285456).

Almost surely, 2^{122345122052421} is an apocalyptic number.

It is an amenable number.

122345122052421 is a deficient number, since it is larger than the sum of its proper divisors (58135625373051).

122345122052421 is a wasteful number, since it uses less digits than its factorization.

122345122052421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289231967080 (or 289231967077 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 36.

Adding to 122345122052421 its reverse (124250221543221), we get a palindrome (246595343595642).

The spelling of 122345122052421 in words is "one hundred twenty-two trillion, three hundred forty-five billion, one hundred twenty-two million, fifty-two thousand, four hundred twenty-one".