21113032042003 has 16 divisors (see below), whose sum is σ = 24345230279040. Its totient is φ = 18108022435200.

The previous prime is 21113032041979. The next prime is 21113032042007. The reversal of 21113032042003 is 30024023031112.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21113032042003 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21113032042007) 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, 209533225 + ... + 209633962.

It is an arithmetic number, because the mean of its divisors is an integer number (1521576892440).

Almost surely, 2^{21113032042003} is an apocalyptic number.

21113032042003 is a deficient number, since it is larger than the sum of its proper divisors (3232198237037).

21113032042003 is a wasteful number, since it uses less digits than its factorization.

21113032042003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419167458.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 21113032042003 its reverse (30024023031112), we get a palindrome (51137055073115).

The spelling of 21113032042003 in words is "twenty-one trillion, one hundred thirteen billion, thirty-two million, forty-two thousand, three".