223123310221 has 32 divisors (see below), whose sum is σ = 267291417600. Its totient is φ = 182206402560.

The previous prime is 223123310209. The next prime is 223123310327. The reversal of 223123310221 is 122013321322.

It is not a de Polignac number, because 223123310221 - 2⁹ = 223123309709 is a prime.

It is a super-3 number, since 3×223123310221³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 223123310192 and 223123310201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223123310821) 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, 36449041 + ... + 36455161.

It is an arithmetic number, because the mean of its divisors is an integer number (8352856800).

Almost surely, 2^223123310221 is an apocalyptic number.

It is an amenable number.

223123310221 is a deficient number, since it is larger than the sum of its proper divisors (44168107379).

223123310221 is a wasteful number, since it uses less digits than its factorization.

223123310221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8509.

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

Adding to 223123310221 its reverse (122013321322), we get a palindrome (345136631543).

The spelling of 223123310221 in words is "two hundred twenty-three billion, one hundred twenty-three million, three hundred ten thousand, two hundred twenty-one".