124111111421 has 16 divisors (see below), whose sum is σ = 150903466560. Its totient is φ = 100602305280.

The previous prime is 124111111391. The next prime is 124111111427.

124111111421 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 124111111421 - 2¹⁰ = 124111110397 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 124111111393 and 124111111402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124111111427) 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, 17462126 + ... + 17469231.

It is an arithmetic number, because the mean of its divisors is an integer number (9431466660).

Almost surely, 2^124111111421 is an apocalyptic number.

124111111421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

124111111421 is a deficient number, since it is larger than the sum of its proper divisors (26792355139).

124111111421 is a wasteful number, since it uses less digits than its factorization.

124111111421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34931404.

The product of its digits is 64, while the sum is 20.

It can be divided in two parts, 124111 and 111421, that added together give a palindrome (235532).

The spelling of 124111111421 in words is "one hundred twenty-four billion, one hundred eleven million, one hundred eleven thousand, four hundred twenty-one".