1113121112011 has 4 divisors (see below), whose sum is σ = 1128798874224. Its totient is φ = 1097443349800.

The previous prime is 1113121111987. The next prime is 1113121112021. The reversal of 1113121112011 is 1102111213111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1113121112011 - 2¹⁵ = 1113121079243 is a prime.

It is a super-2 number, since 2×1113121112011² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1113121112021) 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, 7838881000 + ... + 7838881141.

It is an arithmetic number, because the mean of its divisors is an integer number (282199718556).

Almost surely, 2^{1113121112011} is an apocalyptic number.

1113121112011 is a deficient number, since it is larger than the sum of its proper divisors (15677762213).

1113121112011 is an equidigital number, since it uses as much as digits as its factorization.

1113121112011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15677762212.

The product of its (nonzero) digits is 12, while the sum is 16.

Adding to 1113121112011 its reverse (1102111213111), we get a palindrome (2215232325122).

The spelling of 1113121112011 in words is "one trillion, one hundred thirteen billion, one hundred twenty-one million, one hundred twelve thousand, eleven".