222001221122001 has 48 divisors (see below), whose sum is σ = 336761145826560. Its totient is φ = 146124489214080.

The previous prime is 222001221121973. The next prime is 222001221122027. The reversal of 222001221122001 is 100221122100222.

It is a happy number.

222001221122001 is a `hidden beast` number, since 2 + 220 + 0 + 1 + 221 + 1 + 220 + 0 + 1 = 666.

It is not a de Polignac number, because 222001221122001 - 2⁹ = 222001221121489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (222001221122101) 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, 1438565221 + ... + 1438719533.

It is an arithmetic number, because the mean of its divisors is an integer number (7015857204720).

Almost surely, 2^{222001221122001} is an apocalyptic number.

It is an amenable number.

222001221122001 is a deficient number, since it is larger than the sum of its proper divisors (114759924704559).

222001221122001 is an equidigital number, since it uses as much as digits as its factorization.

222001221122001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229348 (or 229336 counting only the distinct ones).

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

Adding to 222001221122001 its reverse (100221122100222), we get a palindrome (322222343222223).

The spelling of 222001221122001 in words is "two hundred twenty-two trillion, one billion, two hundred twenty-one million, one hundred twenty-two thousand, one".