223221012977 has 2 divisors, whose sum is σ = 223221012978. Its totient is φ = 223221012976.

The previous prime is 223221012953. The next prime is 223221012979. The reversal of 223221012977 is 779210122322.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 204095229361 + 19125783616 = 451769^2 + 138296^2 .

It is a cyclic number.

It is not a de Polignac number, because 223221012977 - 2³⁰ = 222147271153 is a prime.

It is a super-3 number, since 3×223221012977³ (a number of 35 digits) contains 333 as substring.

Together with 223221012979, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 223221012977.

It is not a weakly prime, because it can be changed into another prime (223221012979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111610506488 + 111610506489.

It is an arithmetic number, because the mean of its divisors is an integer number (111610506489).

Almost surely, 2^223221012977 is an apocalyptic number.

It is an amenable number.

223221012977 is a deficient number, since it is larger than the sum of its proper divisors (1).

223221012977 is an equidigital number, since it uses as much as digits as its factorization.

223221012977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42336, while the sum is 38.

The spelling of 223221012977 in words is "two hundred twenty-three billion, two hundred twenty-one million, twelve thousand, nine hundred seventy-seven".