222221112000121 has 16 divisors (see below), whose sum is σ = 239357220858000. Its totient is φ = 205091031011328.

The previous prime is 222221112000091. The next prime is 222221112000149. The reversal of 222221112000121 is 121000211122222.

It can be written as a sum of positive squares in 8 ways, for example, as 86153296334400 + 136067815665721 = 9281880^2 + 11664811^2 .

It is a cyclic number.

It is not a de Polignac number, because 222221112000121 - 2¹¹ = 222221111998073 is a prime.

It is a super-3 number, since 3×222221112000121³ (a number of 44 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222221112000721) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3506305185 + ... + 3506368561.

It is an arithmetic number, because the mean of its divisors is an integer number (14959826303625).

Almost surely, 2^{222221112000121} is an apocalyptic number.

It is an amenable number.

222221112000121 is a deficient number, since it is larger than the sum of its proper divisors (17136108857879).

222221112000121 is a wasteful number, since it uses less digits than its factorization.

222221112000121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106668.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 222221112000121 its reverse (121000211122222), we get a palindrome (343221323122343).

The spelling of 222221112000121 in words is "two hundred twenty-two trillion, two hundred twenty-one billion, one hundred twelve million, one hundred twenty-one", and thus it is an aban number.