123021120133019 has 4 divisors (see below), whose sum is σ = 123021171472560. Its totient is φ = 123021068793480.

The previous prime is 123021120133003. The next prime is 123021120133031. The reversal of 123021120133019 is 910331021120321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 123021120133019 - 2⁴ = 123021120133003 is a prime.

It is a super-2 number, since 2×123021120133019² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123021120132982 and 123021120133000.

It is not an unprimeable number, because it can be changed into a prime (123021120133319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21889904 + ... + 26929725.

It is an arithmetic number, because the mean of its divisors is an integer number (30755292868140).

Almost surely, 2^{123021120133019} is an apocalyptic number.

123021120133019 is a deficient number, since it is larger than the sum of its proper divisors (51339541).

123021120133019 is an equidigital number, since it uses as much as digits as its factorization.

123021120133019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51339540.

The product of its (nonzero) digits is 1944, while the sum is 29.

The spelling of 123021120133019 in words is "one hundred twenty-three trillion, twenty-one billion, one hundred twenty million, one hundred thirty-three thousand, nineteen".