222111200121 has 32 divisors (see below), whose sum is σ = 321646849920. Its totient is φ = 135789502464.

The previous prime is 222111200119. The next prime is 222111200131. The reversal of 222111200121 is 121002111222.

It is not a de Polignac number, because 222111200121 - 2¹ = 222111200119 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 222111200121.

It is not an unprimeable number, because it can be changed into a prime (222111200131) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 773121 + ... + 1020753.

It is an arithmetic number, because the mean of its divisors is an integer number (10051464060).

Almost surely, 2^222111200121 is an apocalyptic number.

It is an amenable number.

222111200121 is a deficient number, since it is larger than the sum of its proper divisors (99535649799).

222111200121 is a wasteful number, since it uses less digits than its factorization.

222111200121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248105.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 222111200121 its reverse (121002111222), we get a palindrome (343113311343).

The spelling of 222111200121 in words is "two hundred twenty-two billion, one hundred eleven million, two hundred thousand, one hundred twenty-one".