223064261221 has 4 divisors (see below), whose sum is σ = 223518567744. Its totient is φ = 222609954700.

The previous prime is 223064261201. The next prime is 223064261257. The reversal of 223064261221 is 122162460322.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 223064261221 - 2¹³ = 223064253029 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 (223064261201) 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, 227152525 + ... + 227153506.

It is an arithmetic number, because the mean of its divisors is an integer number (55879641936).

Almost surely, 2^223064261221 is an apocalyptic number.

It is an amenable number.

223064261221 is a deficient number, since it is larger than the sum of its proper divisors (454306523).

223064261221 is an equidigital number, since it uses as much as digits as its factorization.

223064261221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454306522.

The product of its (nonzero) digits is 13824, while the sum is 31.

The spelling of 223064261221 in words is "two hundred twenty-three billion, sixty-four million, two hundred sixty-one thousand, two hundred twenty-one".