223230313921 has 2 divisors, whose sum is σ = 223230313922. Its totient is φ = 223230313920.

The previous prime is 223230313919. The next prime is 223230313927. The reversal of 223230313921 is 129313032322.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 187571279025 + 35659034896 = 433095^2 + 188836^2 .

It is a cyclic number.

It is not a de Polignac number, because 223230313921 - 2¹ = 223230313919 is a prime.

It is a super-3 number, since 3×223230313921³ (a number of 35 digits) contains 333 as substring.

Together with 223230313919, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (223230313927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111615156960 + 111615156961.

It is an arithmetic number, because the mean of its divisors is an integer number (111615156961).

Almost surely, 2^223230313921 is an apocalyptic number.

It is an amenable number.

223230313921 is a deficient number, since it is larger than the sum of its proper divisors (1).

223230313921 is an equidigital number, since it uses as much as digits as its factorization.

223230313921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 31.

The spelling of 223230313921 in words is "two hundred twenty-three billion, two hundred thirty million, three hundred thirteen thousand, nine hundred twenty-one".