223001222221 has 2 divisors, whose sum is σ = 223001222222. Its totient is φ = 223001222220.

The previous prime is 223001222209. The next prime is 223001222233. The reversal of 223001222221 is 122222100322.

It is a balanced prime because it is at equal distance from previous prime (223001222209) and next prime (223001222233).

It can be written as a sum of positive squares in only one way, i.e., 213269399721 + 9731822500 = 461811^2 + 98650^2 .

It is a cyclic number.

It is not a de Polignac number, because 223001222221 - 2²⁵ = 222967667789 is a prime.

It is a super-2 number, since 2×223001222221² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (223001225221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111500611110 + 111500611111.

It is an arithmetic number, because the mean of its divisors is an integer number (111500611111).

Almost surely, 2^223001222221 is an apocalyptic number.

It is an amenable number.

223001222221 is a deficient number, since it is larger than the sum of its proper divisors (1).

223001222221 is an equidigital number, since it uses as much as digits as its factorization.

223001222221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 223001222221 its reverse (122222100322), we get a palindrome (345223322543).

The spelling of 223001222221 in words is "two hundred twenty-three billion, one million, two hundred twenty-two thousand, two hundred twenty-one".