221312034223 has 6 divisors (see below), whose sum is σ = 257444611296. Its totient is φ = 189696029292.

The previous prime is 221312034179. The next prime is 221312034241. The reversal of 221312034223 is 322430213122.

It is not a de Polignac number, because 221312034223 - 2¹³ = 221312026031 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 (221312034323) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2258286015 + ... + 2258286112.

It is an arithmetic number, because the mean of its divisors is an integer number (42907435216).

Almost surely, 2^221312034223 is an apocalyptic number.

221312034223 is a deficient number, since it is larger than the sum of its proper divisors (36132577073).

221312034223 is an equidigital number, since it uses as much as digits as its factorization.

221312034223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4516572141 (or 4516572134 counting only the distinct ones).

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

Adding to 221312034223 its reverse (322430213122), we get a palindrome (543742247345).

The spelling of 221312034223 in words is "two hundred twenty-one billion, three hundred twelve million, thirty-four thousand, two hundred twenty-three".