1100002003243 has 16 divisors (see below), whose sum is σ = 1305105211872. Its totient is φ = 913939200000.

The previous prime is 1100002003241. The next prime is 1100002003253. The reversal of 1100002003243 is 3423002000011.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1100002003243 - 2¹ = 1100002003241 is a prime.

It is a super-2 number, since 2×1100002003243² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1100002003241) 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, 38066358 + ... + 38095243.

It is an arithmetic number, because the mean of its divisors is an integer number (81569075742).

Almost surely, 2^{1100002003243} is an apocalyptic number.

1100002003243 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1100002003243 is a deficient number, since it is larger than the sum of its proper divisors (205103208629).

1100002003243 is a wasteful number, since it uses less digits than its factorization.

1100002003243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76161726.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 1100002003243 its reverse (3423002000011), we get a palindrome (4523004003254).

The spelling of 1100002003243 in words is "one trillion, one hundred billion, two million, three thousand, two hundred forty-three".