222120000120221 has 16 divisors (see below), whose sum is σ = 268795391486976. Its totient is φ = 179181559931136.

The previous prime is 222120000120199. The next prime is 222120000120233. The reversal of 222120000120221 is 122021000021222.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-222120000120221 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

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 222120000120221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222120000120251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37232546 + ... + 42784371.

It is an arithmetic number, because the mean of its divisors is an integer number (16799711967936).

Almost surely, 2^{222120000120221} is an apocalyptic number.

It is an amenable number.

222120000120221 is a deficient number, since it is larger than the sum of its proper divisors (46675391366755).

222120000120221 is a wasteful number, since it uses less digits than its factorization.

222120000120221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80040268.

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

Adding to 222120000120221 its reverse (122021000021222), we get a palindrome (344141000141443).

The spelling of 222120000120221 in words is "two hundred twenty-two trillion, one hundred twenty billion, one hundred twenty thousand, two hundred twenty-one".