23021203123 has 32 divisors (see below), whose sum is σ = 25315179264. Its totient is φ = 20846149632.

The previous prime is 23021203019. The next prime is 23021203133. The reversal of 23021203123 is 32130212032.

It is not a de Polignac number, because 23021203123 - 2¹⁷ = 23021072051 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23021203123.

It is not an unprimeable number, because it can be changed into a prime (23021203133) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39897811 + ... + 39898387.

It is an arithmetic number, because the mean of its divisors is an integer number (791099352).

Almost surely, 2^23021203123 is an apocalyptic number.

23021203123 is a deficient number, since it is larger than the sum of its proper divisors (2293976141).

23021203123 is a wasteful number, since it uses less digits than its factorization.

23021203123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1231.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 23021203123 its reverse (32130212032), we get a palindrome (55151415155).

The spelling of 23021203123 in words is "twenty-three billion, twenty-one million, two hundred three thousand, one hundred twenty-three".