11121240403 has 8 divisors (see below), whose sum is σ = 13687680608. Its totient is φ = 8799223104.

The previous prime is 11121240349. The next prime is 11121240433. The reversal of 11121240403 is 30404212111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-11121240403 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11121240433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61105626 + ... + 61105807.

It is an arithmetic number, because the mean of its divisors is an integer number (1710960076).

Almost surely, 2^11121240403 is an apocalyptic number.

11121240403 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

11121240403 is a deficient number, since it is larger than the sum of its proper divisors (2566440205).

11121240403 is a wasteful number, since it uses less digits than its factorization.

11121240403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122211453.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 11121240403 its reverse (30404212111), we get a palindrome (41525452514).

The spelling of 11121240403 in words is "eleven billion, one hundred twenty-one million, two hundred forty thousand, four hundred three".