222200121 has 16 divisors (see below), whose sum is σ = 348062400. Its totient is φ = 124307520.

The previous prime is 222200119. The next prime is 222200129. The reversal of 222200121 is 121002222.

222200121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 222200121 - 2¹ = 222200119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 222200097 and 222200106.

It is not an unprimeable number, because it can be changed into a prime (222200129) 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, 258546 + ... + 259403.

It is an arithmetic number, because the mean of its divisors is an integer number (21753900).

Almost surely, 2^222200121 is an apocalyptic number.

It is an amenable number.

222200121 is a deficient number, since it is larger than the sum of its proper divisors (125862279).

222200121 is a wasteful number, since it uses less digits than its factorization.

222200121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 517976.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 222200121 is about 14906.3785340370. The cubic root of 222200121 is about 605.6867833186.

Adding to 222200121 its reverse (121002222), we get a palindrome (343202343).

The spelling of 222200121 in words is "two hundred twenty-two million, two hundred thousand, one hundred twenty-one".