112121121011 has 4 divisors (see below), whose sum is σ = 112157421000. Its totient is φ = 112084821024.

The previous prime is 112121121001. The next prime is 112121121029. The reversal of 112121121011 is 110121121211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 110121121211 = 197 ⋅558990463.

It is a cyclic number.

It is not a de Polignac number, because 112121121011 - 2¹⁸ = 112120858867 is a prime.

It is a super-2 number, since 2×112121121011² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (112121121001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18145361 + ... + 18151538.

It is an arithmetic number, because the mean of its divisors is an integer number (28039355250).

Almost surely, 2^112121121011 is an apocalyptic number.

112121121011 is a deficient number, since it is larger than the sum of its proper divisors (36299989).

112121121011 is an equidigital number, since it uses as much as digits as its factorization.

112121121011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36299988.

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

Adding to 112121121011 its reverse (110121121211), we get a palindrome (222242242222).

The spelling of 112121121011 in words is "one hundred twelve billion, one hundred twenty-one million, one hundred twenty-one thousand, eleven".