111321022211 has 16 divisors (see below), whose sum is σ = 133936930560. Its totient is φ = 90384608160.

The previous prime is 111321022171. The next prime is 111321022223. The reversal of 111321022211 is 112220123111.

It is a happy number.

It is not a de Polignac number, because 111321022211 - 2⁶ = 111321022147 is a prime.

It is a super-2 number, since 2×111321022211² (a number of 23 digits) contains 22 as substring.

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 111321022211.

It is not an unprimeable number, because it can be changed into a prime (111321022271) 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, 1098881 + ... + 1195901.

It is an arithmetic number, because the mean of its divisors is an integer number (8371058160).

Almost surely, 2^111321022211 is an apocalyptic number.

111321022211 is a deficient number, since it is larger than the sum of its proper divisors (22615908349).

111321022211 is an equidigital number, since it uses as much as digits as its factorization.

111321022211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105674.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 111321022211 its reverse (112220123111), we get a palindrome (223541145322).

The spelling of 111321022211 in words is "one hundred eleven billion, three hundred twenty-one million, twenty-two thousand, two hundred eleven".