111211100023222 has 4 divisors (see below), whose sum is σ = 166816650034836. Its totient is φ = 55605550011610.

The previous prime is 111211100023213. The next prime is 111211100023259. The reversal of 111211100023222 is 222320001112111.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×111211100023222² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 111211100023222.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 27802775005804 + ... + 27802775005807.

It is an arithmetic number, because the mean of its divisors is an integer number (41704162508709).

Almost surely, 2^{111211100023222} is an apocalyptic number.

111211100023222 is a deficient number, since it is larger than the sum of its proper divisors (55605550011614).

111211100023222 is an equidigital number, since it uses as much as digits as its factorization.

111211100023222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55605550011613.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 111211100023222 its reverse (222320001112111), we get a palindrome (333531101135333).

The spelling of 111211100023222 in words is "one hundred eleven trillion, two hundred eleven billion, one hundred million, twenty-three thousand, two hundred twenty-two".