123113310221 has 8 divisors (see below), whose sum is σ = 134361025344. Its totient is φ = 111874861120.

The previous prime is 123113310209. The next prime is 123113310227. The reversal of 123113310221 is 122013311321.

It is a happy number.

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

It is not a de Polignac number, because 123113310221 - 2²⁶ = 123046201357 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123113310193 and 123113310202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123113310227) 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, 2288705 + ... + 2341878.

It is an arithmetic number, because the mean of its divisors is an integer number (16795128168).

Almost surely, 2^123113310221 is an apocalyptic number.

123113310221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

123113310221 is a deficient number, since it is larger than the sum of its proper divisors (11247715123).

123113310221 is a wasteful number, since it uses less digits than its factorization.

123113310221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4633011.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 123113310221 its reverse (122013311321), we get a palindrome (245126621542).

It can be divided in two parts, 123113 and 310221, that added together give a palindrome (433334).

The spelling of 123113310221 in words is "one hundred twenty-three billion, one hundred thirteen million, three hundred ten thousand, two hundred twenty-one".