10001121003 has 16 divisors (see below), whose sum is σ = 14827368960. Its totient is φ = 6662512008.

The previous prime is 10001121001. The next prime is 10001121007. The reversal of 10001121003 is 30012110001.

It is not a de Polignac number, because 10001121003 - 2¹ = 10001121001 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (10001121001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98575 + ... + 172392.

It is an arithmetic number, because the mean of its divisors is an integer number (926710560).

Almost surely, 2^10001121003 is an apocalyptic number.

10001121003 is a deficient number, since it is larger than the sum of its proper divisors (4826247957).

10001121003 is a wasteful number, since it uses less digits than its factorization.

10001121003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272343 (or 272337 counting only the distinct ones).

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

Adding to 10001121003 its reverse (30012110001), we get a palindrome (40013231004).

The spelling of 10001121003 in words is "ten billion, one million, one hundred twenty-one thousand, three".