123020220121123 has 4 divisors (see below), whose sum is σ = 132483313976608. Its totient is φ = 113557126265640.

The previous prime is 123020220121093. The next prime is 123020220121147. The reversal of 123020220121123 is 321121022020321.

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 123020220121123 - 2⁵ = 123020220121091 is a prime.

It is a super-2 number, since 2×123020220121123² (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 = 123020220121094 and 123020220121103.

It is not an unprimeable number, because it can be changed into a prime (123020220151123) 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, 4731546927723 + ... + 4731546927748.

It is an arithmetic number, because the mean of its divisors is an integer number (33120828494152).

Almost surely, 2^{123020220121123} is an apocalyptic number.

123020220121123 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

123020220121123 is a deficient number, since it is larger than the sum of its proper divisors (9463093855485).

123020220121123 is an equidigital number, since it uses as much as digits as its factorization.

123020220121123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9463093855484.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 123020220121123 its reverse (321121022020321), we get a palindrome (444141242141444).

The spelling of 123020220121123 in words is "one hundred twenty-three trillion, twenty billion, two hundred twenty million, one hundred twenty-one thousand, one hundred twenty-three".