111012221111 has 8 divisors (see below), whose sum is σ = 121108742544. Its totient is φ = 100916449920.

The previous prime is 111012221083. The next prime is 111012221149. The reversal of 111012221111 is 111122210111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 111012221111 - 2¹⁰ = 111012220087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111012221171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 147935 + ... + 493871.

It is an arithmetic number, because the mean of its divisors is an integer number (15138592818).

Almost surely, 2^111012221111 is an apocalyptic number.

111012221111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

111012221111 is a deficient number, since it is larger than the sum of its proper divisors (10096521433).

111012221111 is a wasteful number, since it uses less digits than its factorization.

111012221111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375121.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 111012221111 its reverse (111122210111), we get a palindrome (222134431222).

It can be divided in two parts, 1110 and 12221111, that added together give a palindrome (12222221).

The spelling of 111012221111 in words is "one hundred eleven billion, twelve million, two hundred twenty-one thousand, one hundred eleven".