20002121233223 has 16 divisors (see below), whose sum is σ = 20868764313600. Its totient is φ = 19147646511840.

The previous prime is 20002121233177. The next prime is 20002121233261. The reversal of 20002121233223 is 32233212120002.

It is a cyclic number.

It is not a de Polignac number, because 20002121233223 - 2²⁸ = 20001852797767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20002121233723) 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, 344183 + ... + 6334248.

It is an arithmetic number, because the mean of its divisors is an integer number (1304297769600).

Almost surely, 2^{20002121233223} is an apocalyptic number.

20002121233223 is a deficient number, since it is larger than the sum of its proper divisors (866643080377).

20002121233223 is a wasteful number, since it uses less digits than its factorization.

20002121233223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6679342.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 20002121233223 its reverse (32233212120002), we get a palindrome (52235333353225).

The spelling of 20002121233223 in words is "twenty trillion, two billion, one hundred twenty-one million, two hundred thirty-three thousand, two hundred twenty-three".