1111240051 has 4 divisors (see below), whose sum is σ = 1122696232. Its totient is φ = 1099783872.

The previous prime is 1111240049. The next prime is 1111240057. The reversal of 1111240051 is 1500421111.

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 1111240051 - 2¹ = 1111240049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1111240057) 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, 5727945 + ... + 5728138.

It is an arithmetic number, because the mean of its divisors is an integer number (280674058).

Almost surely, 2^1111240051 is an apocalyptic number.

1111240051 is a deficient number, since it is larger than the sum of its proper divisors (11456181).

1111240051 is an equidigital number, since it uses as much as digits as its factorization.

1111240051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11456180.

The product of its (nonzero) digits is 40, while the sum is 16.

The square root of 1111240051 is about 33335.2673755589. The cubic root of 1111240051 is about 1035.7842317230.

Adding to 1111240051 its reverse (1500421111), we get a palindrome (2611661162).

The spelling of 1111240051 in words is "one billion, one hundred eleven million, two hundred forty thousand, fifty-one".