23003221220221 has 16 divisors (see below), whose sum is σ = 26570816633088. Its totient is φ = 19681714624000.

The previous prime is 23003221220191. The next prime is 23003221220233. The reversal of 23003221220221 is 12202212230032.

It is not a de Polignac number, because 23003221220221 - 2⁷ = 23003221220093 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23003221220192 and 23003221220201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23003221220251) 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, 21512796 + ... + 22556746.

It is an arithmetic number, because the mean of its divisors is an integer number (1660676039568).

Almost surely, 2^{23003221220221} is an apocalyptic number.

It is an amenable number.

23003221220221 is a deficient number, since it is larger than the sum of its proper divisors (3567595412867).

23003221220221 is a wasteful number, since it uses less digits than its factorization.

23003221220221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1161812.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 23003221220221 its reverse (12202212230032), we get a palindrome (35205433450253).

The spelling of 23003221220221 in words is "twenty-three trillion, three billion, two hundred twenty-one million, two hundred twenty thousand, two hundred twenty-one".