222001220222001 has 48 divisors (see below), whose sum is σ = 362243915150208. Its totient is φ = 130909810188960.

The previous prime is 222001220221997. The next prime is 222001220222017. The reversal of 222001220222001 is 100222022100222.

222001220222001 is a `hidden beast` number, since 2 + 220 + 0 + 1 + 220 + 2 + 220 + 0 + 1 = 666.

It is not a de Polignac number, because 222001220222001 - 2² = 222001220221997 is a prime.

It is not an unprimeable number, because it can be changed into a prime (222001220222701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 249996421 + ... + 250882866.

It is an arithmetic number, because the mean of its divisors is an integer number (7546748232296).

Almost surely, 2^{222001220222001} is an apocalyptic number.

It is an amenable number.

222001220222001 is a deficient number, since it is larger than the sum of its proper divisors (140242694928207).

222001220222001 is a wasteful number, since it uses less digits than its factorization.

222001220222001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500879363 (or 500879338 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 222001220222001 its reverse (100222022100222), we get a palindrome (322223242322223).

The spelling of 222001220222001 in words is "two hundred twenty-two trillion, one billion, two hundred twenty million, two hundred twenty-two thousand, one".