123055111421 has 8 divisors (see below), whose sum is σ = 137516133888. Its totient is φ = 109139788000.

The previous prime is 123055111397. The next prime is 123055111423. The reversal of 123055111421 is 124111550321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 123055111421 - 2¹⁰ = 123055110397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123055111423) 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, 136424285 + ... + 136425186.

It is an arithmetic number, because the mean of its divisors is an integer number (17189516736).

Almost surely, 2^123055111421 is an apocalyptic number.

123055111421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

123055111421 is a deficient number, since it is larger than the sum of its proper divisors (14461022467).

123055111421 is a wasteful number, since it uses less digits than its factorization.

123055111421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272849523.

The product of its (nonzero) digits is 1200, while the sum is 26.

Adding to 123055111421 its reverse (124111550321), we get a palindrome (247166661742).

The spelling of 123055111421 in words is "one hundred twenty-three billion, fifty-five million, one hundred eleven thousand, four hundred twenty-one".