11012021003 has 4 divisors (see below), whose sum is σ = 11064210888. Its totient is φ = 10959831120.

The previous prime is 11012020991. The next prime is 11012021017. The reversal of 11012021003 is 30012021011.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11012021003 - 2⁶ = 11012020939 is a prime.

It is a super-4 number, since 4×11012021003⁴ (a number of 41 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11012021063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26094626 + ... + 26095047.

It is an arithmetic number, because the mean of its divisors is an integer number (2766052722).

Almost surely, 2^11012021003 is an apocalyptic number.

11012021003 is a deficient number, since it is larger than the sum of its proper divisors (52189885).

11012021003 is an equidigital number, since it uses as much as digits as its factorization.

11012021003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52189884.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 11012021003 its reverse (30012021011), we get a palindrome (41024042014).

The spelling of 11012021003 in words is "eleven billion, twelve million, twenty-one thousand, three".