123121023223 has 16 divisors (see below), whose sum is σ = 136142052480. Its totient is φ = 110414959200.

The previous prime is 123121023173. The next prime is 123121023239. The reversal of 123121023223 is 322320121321.

It is a cyclic number.

It is not a de Polignac number, because 123121023223 - 2¹⁷ = 123120892151 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123121023194 and 123121023203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123121023253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16393 + ... + 496498.

It is an arithmetic number, because the mean of its divisors is an integer number (8508878280).

Almost surely, 2^123121023223 is an apocalyptic number.

123121023223 is a deficient number, since it is larger than the sum of its proper divisors (13021029257).

123121023223 is a wasteful number, since it uses less digits than its factorization.

123121023223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513198.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 123121023223 its reverse (322320121321), we get a palindrome (445441144544).

The spelling of 123121023223 in words is "one hundred twenty-three billion, one hundred twenty-one million, twenty-three thousand, two hundred twenty-three".