222001200012221 has 8 divisors (see below), whose sum is σ = 253715789697600. Its totient is φ = 190286643462048.

The previous prime is 222001200012199. The next prime is 222001200012281. The reversal of 222001200012221 is 122210002100222.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-222001200012221 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 222001200012221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222001200012281) 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, 8281430 + ... + 22640328.

It is an arithmetic number, because the mean of its divisors is an integer number (31714473712200).

Almost surely, 2^{222001200012221} is an apocalyptic number.

It is an amenable number.

222001200012221 is a deficient number, since it is larger than the sum of its proper divisors (31714589685379).

222001200012221 is a wasteful number, since it uses less digits than its factorization.

222001200012221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16567603.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 222001200012221 its reverse (122210002100222), we get a palindrome (344211202112443).

The spelling of 222001200012221 in words is "two hundred twenty-two trillion, one billion, two hundred million, twelve thousand, two hundred twenty-one".