12020112111 has 32 divisors (see below), whose sum is σ = 18639346176. Its totient is φ = 6748560000.

The previous prime is 12020112109. The next prime is 12020112121. The reversal of 12020112111 is 11121102021.

It is not a de Polignac number, because 12020112111 - 2¹ = 12020112109 is a prime.

It is a super-2 number, since 2×12020112111² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12020112121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 256221 + ... + 299481.

It is an arithmetic number, because the mean of its divisors is an integer number (582479568).

Almost surely, 2^12020112111 is an apocalyptic number.

12020112111 is a deficient number, since it is larger than the sum of its proper divisors (6619234065).

12020112111 is a wasteful number, since it uses less digits than its factorization.

12020112111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43503.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 12020112111 its reverse (11121102021), we get a palindrome (23141214132).

The spelling of 12020112111 in words is "twelve billion, twenty million, one hundred twelve thousand, one hundred eleven".