223056899621 has 2 divisors, whose sum is σ = 223056899622. Its totient is φ = 223056899620.

The previous prime is 223056899609. The next prime is 223056899623. The reversal of 223056899621 is 126998650322.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 223056899521 + 100 = 472289^2 + 10^2 .

It is a cyclic number.

It is not a de Polignac number, because 223056899621 - 2⁶ = 223056899557 is a prime.

It is a super-3 number, since 3×223056899621³ (a number of 35 digits) contains 333 as substring.

Together with 223056899623, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (223056899623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111528449810 + 111528449811.

It is an arithmetic number, because the mean of its divisors is an integer number (111528449811).

Almost surely, 2^223056899621 is an apocalyptic number.

It is an amenable number.

223056899621 is a deficient number, since it is larger than the sum of its proper divisors (1).

223056899621 is an equidigital number, since it uses as much as digits as its factorization.

223056899621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2799360, while the sum is 53.

The spelling of 223056899621 in words is "two hundred twenty-three billion, fifty-six million, eight hundred ninety-nine thousand, six hundred twenty-one".