111100021222211 has 24 divisors (see below), whose sum is σ = 131752194672384. Its totient is φ = 91769039843040.

The previous prime is 111100021222207. The next prime is 111100021222213. The reversal of 111100021222211 is 112222120001111.

It is not a de Polignac number, because 111100021222211 - 2² = 111100021222207 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 111100021222211.

It is not an unprimeable number, because it can be changed into a prime (111100021222213) 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, 14963255 + ... + 21121056.

It is an arithmetic number, because the mean of its divisors is an integer number (5489674778016).

Almost surely, 2^{111100021222211} is an apocalyptic number.

111100021222211 is a deficient number, since it is larger than the sum of its proper divisors (20652173450173).

111100021222211 is an equidigital number, since it uses as much as digits as its factorization.

111100021222211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36084899 (or 36084870 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 111100021222211 its reverse (112222120001111), we get a palindrome (223322141223322).

The spelling of 111100021222211 in words is "one hundred eleven trillion, one hundred billion, twenty-one million, two hundred twenty-two thousand, two hundred eleven".