222111102212021 has 24 divisors (see below), whose sum is σ = 262964518592160. Its totient is φ = 186843210412320.

The previous prime is 222111102212003. The next prime is 222111102212039. The reversal of 222111102212021 is 120212201111222.

It is an interprime number because it is at equal distance from previous prime (222111102212003) and next prime (222111102212039).

It is not a de Polignac number, because 222111102212021 - 2²² = 222111098017717 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 222111102211984 and 222111102212002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222111102212821) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1123297070 + ... + 1123494783.

It is an arithmetic number, because the mean of its divisors is an integer number (10956854941340).

Almost surely, 2^{222111102212021} is an apocalyptic number.

It is an amenable number.

222111102212021 is a deficient number, since it is larger than the sum of its proper divisors (40853416380139).

222111102212021 is a wasteful number, since it uses less digits than its factorization.

222111102212021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2246791937 (or 2246791926 counting only the distinct ones).

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

Adding to 222111102212021 its reverse (120212201111222), we get a palindrome (342323303323243).

The spelling of 222111102212021 in words is "two hundred twenty-two trillion, one hundred eleven billion, one hundred two million, two hundred twelve thousand, twenty-one".