222121245124 has 6 divisors (see below), whose sum is σ = 388712178974. Its totient is φ = 111060622560.

The previous prime is 222121245113. The next prime is 222121245163. The reversal of 222121245124 is 421542121222.

It can be written as a sum of positive squares in only one way, i.e., 168167246724 + 53953998400 = 410082^2 + 232280^2 .

It is a junction number, because it is equal to n+sod(n) for n = 222121245092 and 222121245101.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27765155637 + ... + 27765155644.

Almost surely, 2^222121245124 is an apocalyptic number.

It is an amenable number.

222121245124 is a deficient number, since it is larger than the sum of its proper divisors (166590933850).

222121245124 is a wasteful number, since it uses less digits than its factorization.

222121245124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55530311285 (or 55530311283 counting only the distinct ones).

The product of its digits is 5120, while the sum is 28.

Adding to 222121245124 its reverse (421542121222), we get a palindrome (643663366346).

The spelling of 222121245124 in words is "two hundred twenty-two billion, one hundred twenty-one million, two hundred forty-five thousand, one hundred twenty-four".