222112021110021 has 16 divisors (see below), whose sum is σ = 376062681244800. Its totient is φ = 126921154919904.

The previous prime is 222112021110013. The next prime is 222112021110131. The reversal of 222112021110021 is 120011120211222.

222112021110021 is a `hidden beast` number, since 222 + 112 + 0 + 211 + 100 + 21 = 666.

It is not a de Polignac number, because 222112021110021 - 2³ = 222112021110013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 222112021109976 and 222112021110003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222112022110021) 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, 587597939256 + ... + 587597939633.

It is an arithmetic number, because the mean of its divisors is an integer number (23503917577800).

Almost surely, 2^{222112021110021} is an apocalyptic number.

222112021110021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

222112021110021 is a deficient number, since it is larger than the sum of its proper divisors (153950660134779).

222112021110021 is a wasteful number, since it uses less digits than its factorization.

222112021110021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1175195878905 (or 1175195878899 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 222112021110021 its reverse (120011120211222), we get a palindrome (342123141321243).

The spelling of 222112021110021 in words is "two hundred twenty-two trillion, one hundred twelve billion, twenty-one million, one hundred ten thousand, twenty-one".