222111604645 has 32 divisors (see below), whose sum is σ = 321189120000. Its totient is φ = 144042981696.

The previous prime is 222111604643. The next prime is 222111604661. The reversal of 222111604645 is 546406111222.

It is a cyclic number.

It is not a de Polignac number, because 222111604645 - 2¹ = 222111604643 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 222111604645.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222111604643) 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, 105856 + ... + 674854.

It is an arithmetic number, because the mean of its divisors is an integer number (10037160000).

Almost surely, 2^222111604645 is an apocalyptic number.

It is an amenable number.

222111604645 is a deficient number, since it is larger than the sum of its proper divisors (99077515355).

222111604645 is a wasteful number, since it uses less digits than its factorization.

222111604645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 569617.

The product of its (nonzero) digits is 23040, while the sum is 34.

Adding to 222111604645 its reverse (546406111222), we get a palindrome (768517715867).

The spelling of 222111604645 in words is "two hundred twenty-two billion, one hundred eleven million, six hundred four thousand, six hundred forty-five".