223033021997 has 2 divisors, whose sum is σ = 223033021998. Its totient is φ = 223033021996.

The previous prime is 223033021963. The next prime is 223033022039. The reversal of 223033021997 is 799120330322.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 192961647076 + 30071374921 = 439274^2 + 173411^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-223033021997 is a prime.

It is a super-2 number, since 2×223033021997² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (223033021927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111516510998 + 111516510999.

It is an arithmetic number, because the mean of its divisors is an integer number (111516510999).

Almost surely, 2^223033021997 is an apocalyptic number.

It is an amenable number.

223033021997 is a deficient number, since it is larger than the sum of its proper divisors (1).

223033021997 is an equidigital number, since it uses as much as digits as its factorization.

223033021997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 122472, while the sum is 41.

The spelling of 223033021997 in words is "two hundred twenty-three billion, thirty-three million, twenty-one thousand, nine hundred ninety-seven".