1111403121 has 8 divisors (see below), whose sum is σ = 1482877344. Its totient is φ = 740432160.

The previous prime is 1111403107. The next prime is 1111403129. The reversal of 1111403121 is 1213041111.

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

It is not a de Polignac number, because 1111403121 - 2⁵ = 1111403089 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1111403121.

It is not an unprimeable number, because it can be changed into a prime (1111403129) 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, 120631 + ... + 129516.

It is an arithmetic number, because the mean of its divisors is an integer number (185359668).

Almost surely, 2^1111403121 is an apocalyptic number.

It is an amenable number.

1111403121 is a deficient number, since it is larger than the sum of its proper divisors (371474223).

1111403121 is a wasteful number, since it uses less digits than its factorization.

1111403121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251631.

The product of its (nonzero) digits is 24, while the sum is 15.

The square root of 1111403121 is about 33337.7131939190. The cubic root of 1111403121 is about 1035.8348949657.

Adding to 1111403121 its reverse (1213041111), we get a palindrome (2324444232).

The spelling of 1111403121 in words is "one billion, one hundred eleven million, four hundred three thousand, one hundred twenty-one".