222200233143221 has 12 divisors (see below), whose sum is σ = 223478244637452. Its totient is φ = 220929487881024.

The previous prime is 222200233143211. The next prime is 222200233143293. The reversal of 222200233143221 is 122341332002222.

It can be written as a sum of positive squares in 2 ways, for example, as 81502346458225 + 140697886684996 = 9027865^2 + 11861614^2 .

It is a de Polignac number, because none of the positive numbers 2^k-222200233143221 is a prime.

It is a super-2 number, since 2×222200233143221² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222200233143211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 242317031 + ... + 243232283.

It is an arithmetic number, because the mean of its divisors is an integer number (18623187053121).

Almost surely, 2^{222200233143221} is an apocalyptic number.

It is an amenable number.

222200233143221 is a deficient number, since it is larger than the sum of its proper divisors (1278011494231).

222200233143221 is an frugal number, since it uses more digits than its factorization.

222200233143221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 923188 (or 923009 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 222200233143221 its reverse (122341332002222), we get a palindrome (344541565145443).

The spelling of 222200233143221 in words is "two hundred twenty-two trillion, two hundred billion, two hundred thirty-three million, one hundred forty-three thousand, two hundred twenty-one".