221323214023 has 4 divisors (see below), whose sum is σ = 221382410920. Its totient is φ = 221264017128.

The previous prime is 221323213987. The next prime is 221323214039. The reversal of 221323214023 is 320412323122.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221323214023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221323214323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29592840 + ... + 29600317.

It is an arithmetic number, because the mean of its divisors is an integer number (55345602730).

Almost surely, 2^221323214023 is an apocalyptic number.

221323214023 is a deficient number, since it is larger than the sum of its proper divisors (59196897).

221323214023 is an equidigital number, since it uses as much as digits as its factorization.

221323214023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59196896.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 221323214023 its reverse (320412323122), we get a palindrome (541735537145).

The spelling of 221323214023 in words is "two hundred twenty-one billion, three hundred twenty-three million, two hundred fourteen thousand, twenty-three".