222106656225 has 96 divisors (see below), whose sum is σ = 404387938944. Its totient is φ = 107109273600.

The previous prime is 222106656217. The next prime is 222106656229. The reversal of 222106656225 is 522656601222.

It is not a de Polignac number, because 222106656225 - 2³ = 222106656217 is a prime.

It is not an unprimeable number, because it can be changed into a prime (222106656229) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3311119 + ... + 3377531.

It is an arithmetic number, because the mean of its divisors is an integer number (4212374364).

Almost surely, 2^222106656225 is an apocalyptic number.

222106656225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

222106656225 is a deficient number, since it is larger than the sum of its proper divisors (182281282719).

222106656225 is a wasteful number, since it uses less digits than its factorization.

222106656225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66547 (or 66542 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 39.

The spelling of 222106656225 in words is "two hundred twenty-two billion, one hundred six million, six hundred fifty-six thousand, two hundred twenty-five".