1003001121 has 24 divisors (see below), whose sum is σ = 1481120160. Its totient is φ = 653861376.

The previous prime is 1003001117. The next prime is 1003001141. The reversal of 1003001121 is 1211003001.

It is not a de Polignac number, because 1003001121 - 2² = 1003001117 is a prime.

It is a super-2 number, since 2×1003001121² = 2012022497454513282, which contains 22 as substring.

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 (1003001141) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 97590 + ... + 107376.

It is an arithmetic number, because the mean of its divisors is an integer number (61713340).

Almost surely, 2^1003001121 is an apocalyptic number.

It is an amenable number.

1003001121 is a deficient number, since it is larger than the sum of its proper divisors (478119039).

1003001121 is a wasteful number, since it uses less digits than its factorization.

1003001121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10045 (or 10042 counting only the distinct ones).

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

The square root of 1003001121 is about 31670.1929422604. The cubic root of 1003001121 is about 1000.9993745844. Note that the first 3 decimals are identical.

Adding to 1003001121 its reverse (1211003001), we get a palindrome (2214004122).

It can be divided in two parts, 1003001 and 121, that multiplied together give a palindrome (121363121).

The spelling of 1003001121 in words is "one billion, three million, one thousand, one hundred twenty-one".