111012121011111 has 16 divisors (see below), whose sum is σ = 151196850038784. Its totient is φ = 72418390676064.

The previous prime is 111012121011097. The next prime is 111012121011163. The reversal of 111012121011111 is 111110121210111.

It is a happy number.

111012121011111 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 111012121011111 - 2⁶ = 111012121011047 is a prime.

It is a super-2 number, since 2×111012121011111² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111012121010111) 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, 81112351 + ... + 82469616.

It is an arithmetic number, because the mean of its divisors is an integer number (9449803127424).

Almost surely, 2^{111012121011111} is an apocalyptic number.

111012121011111 is a deficient number, since it is larger than the sum of its proper divisors (40184729027673).

111012121011111 is a wasteful number, since it uses less digits than its factorization.

111012121011111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163586830.

The product of its (nonzero) digits is 4, while the sum is 15.

Adding to 111012121011111 its reverse (111110121210111), we get a palindrome (222122242221222).

It can be divided in two parts, 1110121210111 and 11, that multiplied together give a palindrome (12211333311221).

The spelling of 111012121011111 in words is "one hundred eleven trillion, twelve billion, one hundred twenty-one million, eleven thousand, one hundred eleven".