123031122120221 has 8 divisors (see below), whose sum is σ = 140805314058240. Its totient is φ = 105306509519568.

The previous prime is 123031122120197. The next prime is 123031122120289. The reversal of 123031122120221 is 122021221130321.

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

It is not a de Polignac number, because 123031122120221 - 2³⁰ = 123030048378397 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 (123031122125221) 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, 12394829021 + ... + 12394838946.

It is an arithmetic number, because the mean of its divisors is an integer number (17600664257280).

Almost surely, 2^{123031122120221} is an apocalyptic number.

It is an amenable number.

123031122120221 is a deficient number, since it is larger than the sum of its proper divisors (17774191938019).

123031122120221 is an equidigital number, since it uses as much as digits as its factorization.

123031122120221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24789668683.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 123031122120221 its reverse (122021221130321), we get a palindrome (245052343250542).

The spelling of 123031122120221 in words is "one hundred twenty-three trillion, thirty-one billion, one hundred twenty-two million, one hundred twenty thousand, two hundred twenty-one".