222010111222121 has 8 divisors (see below), whose sum is σ = 222715000765704. Its totient is φ = 221305250246400.

The previous prime is 222010111222103. The next prime is 222010111222129. The reversal of 222010111222121 is 121222111010222.

It can be written as a sum of positive squares in 4 ways, for example, as 7195242936025 + 214814868286096 = 2682395^2 + 14656564^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 222010111222121 - 2³⁸ = 221735233315177 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 222010111222093 and 222010111222102.

It is not an unprimeable number, because it can be changed into a prime (222010111222129) 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 7 ways as a sum of consecutive naturals, for example, 8479511 + ... + 22713923.

It is an arithmetic number, because the mean of its divisors is an integer number (27839375095713).

Almost surely, 2^{222010111222121} is an apocalyptic number.

It is an amenable number.

222010111222121 is a deficient number, since it is larger than the sum of its proper divisors (704889543583).

222010111222121 is a wasteful number, since it uses less digits than its factorization.

222010111222121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14283931.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 222010111222121 its reverse (121222111010222), we get a palindrome (343232222232343).

The spelling of 222010111222121 in words is "two hundred twenty-two trillion, ten billion, one hundred eleven million, two hundred twenty-two thousand, one hundred twenty-one".