123031210223221 has 8 divisors (see below), whose sum is σ = 123243209812800. Its totient is φ = 122819251402848.

The previous prime is 123031210223213. The next prime is 123031210223269. The reversal of 123031210223221 is 122322012130321.

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 123031210223221 - 2³ = 123031210223213 is a prime.

It is a super-2 number, since 2×123031210223221² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123031210220221) 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, 4148521 + ... + 16225678.

It is an arithmetic number, because the mean of its divisors is an integer number (15405401226600).

Almost surely, 2^{123031210223221} is an apocalyptic number.

It is an amenable number.

123031210223221 is a deficient number, since it is larger than the sum of its proper divisors (211999589579).

123031210223221 is an equidigital number, since it uses as much as digits as its factorization.

123031210223221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20384603.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 123031210223221 its reverse (122322012130321), we get a palindrome (245353222353542).

The spelling of 123031210223221 in words is "one hundred twenty-three trillion, thirty-one billion, two hundred ten million, two hundred twenty-three thousand, two hundred twenty-one".