124121323121421 has 16 divisors (see below), whose sum is σ = 171720184766144. Its totient is φ = 79681116870144.

The previous prime is 124121323121417. The next prime is 124121323121429.

124121323121421 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 124121323121421 - 2² = 124121323121417 is a prime.

It is a super-2 number, since 2×124121323121421² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124121323121429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5763958915 + ... + 5763980448.

It is an arithmetic number, because the mean of its divisors is an integer number (10732511547884).

Almost surely, 2^{124121323121421} is an apocalyptic number.

It is an amenable number.

124121323121421 is a deficient number, since it is larger than the sum of its proper divisors (47598861644723).

124121323121421 is a wasteful number, since it uses less digits than its factorization.

124121323121421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11527939500.

The product of its digits is 4608, while the sum is 30.

The spelling of 124121323121421 in words is "one hundred twenty-four trillion, one hundred twenty-one billion, three hundred twenty-three million, one hundred twenty-one thousand, four hundred twenty-one".