21140403003 has 16 divisors (see below), whose sum is σ = 31641996960. Its totient is φ = 13948305408.

The previous prime is 21140402999. The next prime is 21140403013. The reversal of 21140403003 is 30030404112.

It is not a de Polignac number, because 21140403003 - 2² = 21140402999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21140403013) 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, 4033350 + ... + 4038587.

It is an arithmetic number, because the mean of its divisors is an integer number (1977624810).

Almost surely, 2^21140403003 is an apocalyptic number.

21140403003 is a deficient number, since it is larger than the sum of its proper divisors (10501593957).

21140403003 is an equidigital number, since it uses as much as digits as its factorization.

21140403003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8072043 (or 8072037 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 21140403003 its reverse (30030404112), we get a palindrome (51170807115).

The spelling of 21140403003 in words is "twenty-one billion, one hundred forty million, four hundred three thousand, three".