222112222022121 has 8 divisors (see below), whose sum is σ = 296150298144000. Its totient is φ = 148074480290832.

The previous prime is 222112222022113. The next prime is 222112222022123. The reversal of 222112222022121 is 121220222211222.

It is a happy number.

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

It is not a de Polignac number, because 222112222022121 - 2³ = 222112222022113 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 222112222022091 and 222112222022100.

It is not an unprimeable number, because it can be changed into a prime (222112222022123) 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, 82043650 + ... + 84707643.

It is an arithmetic number, because the mean of its divisors is an integer number (37018787268000).

Almost surely, 2^{222112222022121} is an apocalyptic number.

It is an amenable number.

222112222022121 is a deficient number, since it is larger than the sum of its proper divisors (74038076121879).

222112222022121 is a wasteful number, since it uses less digits than its factorization.

222112222022121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167195295.

The product of its (nonzero) digits is 1024, while the sum is 24.

Adding to 222112222022121 its reverse (121220222211222), we get a palindrome (343332444233343).

The spelling of 222112222022121 in words is "two hundred twenty-two trillion, one hundred twelve billion, two hundred twenty-two million, twenty-two thousand, one hundred twenty-one".