221440443023 has 2 divisors, whose sum is σ = 221440443024. Its totient is φ = 221440443022.

The previous prime is 221440443019. The next prime is 221440443031. The reversal of 221440443023 is 320344044122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221440443023 - 2² = 221440443019 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221440449023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110720221511 + 110720221512.

It is an arithmetic number, because the mean of its divisors is an integer number (110720221512).

Almost surely, 2^221440443023 is an apocalyptic number.

221440443023 is a deficient number, since it is larger than the sum of its proper divisors (1).

221440443023 is an equidigital number, since it uses as much as digits as its factorization.

221440443023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18432, while the sum is 29.

Adding to 221440443023 its reverse (320344044122), we get a palindrome (541784487145).

The spelling of 221440443023 in words is "two hundred twenty-one billion, four hundred forty million, four hundred forty-three thousand, twenty-three".