222112111212021 has 16 divisors (see below), whose sum is σ = 306289452169728. Its totient is φ = 143023091827200.

The previous prime is 222112111212001. The next prime is 222112111212091. The reversal of 222112111212021 is 120212111211222.

It is not a de Polignac number, because 222112111212021 - 2²⁹ = 222111574341109 is a prime.

It is a super-2 number, since 2×222112111212021² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222112111212001) 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 15 ways as a sum of consecutive naturals, for example, 2291988276 + ... + 2292085181.

It is an arithmetic number, because the mean of its divisors is an integer number (19143090760608).

Almost surely, 2^{222112111212021} is an apocalyptic number.

It is an amenable number.

222112111212021 is a deficient number, since it is larger than the sum of its proper divisors (84177340957707).

222112111212021 is a wasteful number, since it uses less digits than its factorization.

222112111212021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4584074012.

The product of its (nonzero) digits is 128, while the sum is 21.

Adding to 222112111212021 its reverse (120212111211222), we get a palindrome (342324222423243).

The spelling of 222112111212021 in words is "two hundred twenty-two trillion, one hundred twelve billion, one hundred eleven million, two hundred twelve thousand, twenty-one".