222200111221 has 16 divisors (see below), whose sum is σ = 248835045888. Its totient is φ = 196667881200.

The previous prime is 222200111183. The next prime is 222200111233. The reversal of 222200111221 is 122111002222.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 222200111221 - 2⁷ = 222200111093 is a prime.

It is a super-2 number, since 2×222200111221² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 222200111195 and 222200111204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222200111521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 608151 + ... + 902356.

It is an arithmetic number, because the mean of its divisors is an integer number (15552190368).

Almost surely, 2^222200111221 is an apocalyptic number.

It is an amenable number.

222200111221 is a deficient number, since it is larger than the sum of its proper divisors (26634934667).

222200111221 is a wasteful number, since it uses less digits than its factorization.

222200111221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1510872.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 222200111221 its reverse (122111002222), we get a palindrome (344311113443).

The spelling of 222200111221 in words is "two hundred twenty-two billion, two hundred million, one hundred eleven thousand, two hundred twenty-one".