123021023223 has 24 divisors (see below), whose sum is σ = 192591395712. Its totient is φ = 69640730544.

The previous prime is 123021023183. The next prime is 123021023231. The reversal of 123021023223 is 322320120321.

It is a happy number.

It is not a de Polignac number, because 123021023223 - 2⁶ = 123021023159 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 123021023223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123021023263) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3894915 + ... + 3926372.

It is an arithmetic number, because the mean of its divisors is an integer number (8024641488).

Almost surely, 2^123021023223 is an apocalyptic number.

123021023223 is a deficient number, since it is larger than the sum of its proper divisors (69570372489).

123021023223 is a wasteful number, since it uses less digits than its factorization.

123021023223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7821411 (or 7821404 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 123021023223 its reverse (322320120321), we get a palindrome (445341143544).

The spelling of 123021023223 in words is "one hundred twenty-three billion, twenty-one million, twenty-three thousand, two hundred twenty-three".