222001200001221 has 8 divisors (see below), whose sum is σ = 296141685954240. Its totient is φ = 147930757024512.

The previous prime is 222001200001211. The next prime is 222001200001313. The reversal of 222001200001221 is 122100002100222.

222001200001221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 222001200001221 - 2⁹ = 222001200000709 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 222001200001221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222001200001211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17510736681 + ... + 17510749358.

It is an arithmetic number, because the mean of its divisors is an integer number (37017710744280).

Almost surely, 2^{222001200001221} is an apocalyptic number.

It is an amenable number.

222001200001221 is a deficient number, since it is larger than the sum of its proper divisors (74140485953019).

222001200001221 is a wasteful number, since it uses less digits than its factorization.

222001200001221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35021488155.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 222001200001221 its reverse (122100002100222), we get a palindrome (344101202101443).

The spelling of 222001200001221 in words is "two hundred twenty-two trillion, one billion, two hundred million, one thousand, two hundred twenty-one".