11121000003 has 8 divisors (see below), whose sum is σ = 16475555600. Its totient is φ = 7413999984.

The previous prime is 11120999999. The next prime is 11121000049. The reversal of 11121000003 is 30000012111.

It is not a de Polignac number, because 11121000003 - 2² = 11120999999 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11121000103) 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, 205944418 + ... + 205944471.

It is an arithmetic number, because the mean of its divisors is an integer number (2059444450).

Almost surely, 2^11121000003 is an apocalyptic number.

11121000003 is a deficient number, since it is larger than the sum of its proper divisors (5354555597).

11121000003 is an equidigital number, since it uses as much as digits as its factorization.

11121000003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411888898 (or 411888892 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

Adding to 11121000003 its reverse (30000012111), we get a palindrome (41121012114).

The spelling of 11121000003 in words is "eleven billion, one hundred twenty-one million, three", and thus it is an aban number.