221321020120223 has 2 divisors, whose sum is σ = 221321020120224. Its totient is φ = 221321020120222.

The previous prime is 221321020120199. The next prime is 221321020120237. The reversal of 221321020120223 is 322021020123122.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221321020120223 - 2⁸ = 221321020119967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221321020120283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110660510060111 + 110660510060112.

It is an arithmetic number, because the mean of its divisors is an integer number (110660510060112).

Almost surely, 2^{221321020120223} is an apocalyptic number.

221321020120223 is a deficient number, since it is larger than the sum of its proper divisors (1).

221321020120223 is an equidigital number, since it uses as much as digits as its factorization.

221321020120223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 221321020120223 its reverse (322021020123122), we get a palindrome (543342040243345).

The spelling of 221321020120223 in words is "two hundred twenty-one trillion, three hundred twenty-one billion, twenty million, one hundred twenty thousand, two hundred twenty-three".