222111202122 has 12 divisors (see below), whose sum is σ = 481240937970. Its totient is φ = 74037067368.

The previous prime is 222111202091. The next prime is 222111202133. The reversal of 222111202122 is 221202111222.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 188372492361 + 33738709761 = 434019^2 + 183681^2 .

It is a super-2 number, since 2×222111202122² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 12339511229 = 222111202122 / (2 + 2 + 2 + 1 + 1 + 1 + 2 + 0 + 2 + 1 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 222111202095 and 222111202104.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6169755597 + ... + 6169755632.

Almost surely, 2^222111202122 is an apocalyptic number.

222111202122 is an abundant number, since it is smaller than the sum of its proper divisors (259129735848).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

222111202122 is a wasteful number, since it uses less digits than its factorization.

222111202122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12339511237 (or 12339511234 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 222111202122 its reverse (221202111222), we get a palindrome (443313313344).

The spelling of 222111202122 in words is "two hundred twenty-two billion, one hundred eleven million, two hundred two thousand, one hundred twenty-two".