2222111232121 has 8 divisors (see below), whose sum is σ = 2429312187744. Its totient is φ = 2015775417120.

The previous prime is 2222111232109. The next prime is 2222111232137. The reversal of 2222111232121 is 1212321112222.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2222111232121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2222111232092 and 2222111232101.

It is not an unprimeable number, because it can be changed into a prime (2222111232161) 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, 216279780 + ... + 216290053.

It is an arithmetic number, because the mean of its divisors is an integer number (303664023468).

Almost surely, 2^{2222111232121} is an apocalyptic number.

It is an amenable number.

2222111232121 is a deficient number, since it is larger than the sum of its proper divisors (207200955623).

2222111232121 is a wasteful number, since it uses less digits than its factorization.

2222111232121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432570311.

The product of its digits is 384, while the sum is 22.

Adding to 2222111232121 its reverse (1212321112222), we get a palindrome (3434432344343).

The spelling of 2222111232121 in words is "two trillion, two hundred twenty-two billion, one hundred eleven million, two hundred thirty-two thousand, one hundred twenty-one".