122121522423 has 8 divisors (see below), whose sum is σ = 180920774000. Its totient is φ = 81414348264.

The previous prime is 122121522421. The next prime is 122121522427. The reversal of 122121522423 is 324225121221.

122121522423 is a `hidden beast` number, since 1 + 2 + 2 + 1 + 215 + 22 + 423 = 666.

It is not a de Polignac number, because 122121522423 - 2¹ = 122121522421 is a prime.

It is a super-2 number, since 2×122121522423² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 4523019349 = 122121522423 / (1 + 2 + 2 + 1 + 2 + 1 + 5 + 2 + 2 + 4 + 2 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122121522421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2261509648 + ... + 2261509701.

It is an arithmetic number, because the mean of its divisors is an integer number (22615096750).

Almost surely, 2^122121522423 is an apocalyptic number.

122121522423 is a deficient number, since it is larger than the sum of its proper divisors (58799251577).

122121522423 is an equidigital number, since it uses as much as digits as its factorization.

122121522423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4523019358 (or 4523019352 counting only the distinct ones).

The product of its digits is 3840, while the sum is 27.

Adding to 122121522423 its reverse (324225121221), we get a palindrome (446346643644).

The spelling of 122121522423 in words is "one hundred twenty-two billion, one hundred twenty-one million, five hundred twenty-two thousand, four hundred twenty-three".