222100002222121 has 16 divisors (see below), whose sum is σ = 229085207543808. Its totient is φ = 215198761050000.

The previous prime is 222100002222019. The next prime is 222100002222151. The reversal of 222100002222121 is 121222200001222.

It is not a de Polignac number, because 222100002222121 - 2¹¹ = 222100002220073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222100002222151) 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 15 ways as a sum of consecutive naturals, for example, 7798996 + ... + 22472746.

It is an arithmetic number, because the mean of its divisors is an integer number (14317825471488).

Almost surely, 2^{222100002222121} is an apocalyptic number.

It is an amenable number.

222100002222121 is a deficient number, since it is larger than the sum of its proper divisors (6985205321687).

222100002222121 is a wasteful number, since it uses less digits than its factorization.

222100002222121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14676612.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 222100002222121 its reverse (121222200001222), we get a palindrome (343322202223343).

The spelling of 222100002222121 in words is "two hundred twenty-two trillion, one hundred billion, two million, two hundred twenty-two thousand, one hundred twenty-one".