21011120303 has 8 divisors (see below), whose sum is σ = 22177240320. Its totient is φ = 19851027480.

The previous prime is 21011120279. The next prime is 21011120327. The reversal of 21011120303 is 30302111012.

It is an interprime number because it is at equal distance from previous prime (21011120279) and next prime (21011120327).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21011120303 - 2¹² = 21011116207 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21011120353) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1499633 + ... + 1513578.

It is an arithmetic number, because the mean of its divisors is an integer number (2772155040).

Almost surely, 2^21011120303 is an apocalyptic number.

21011120303 is a deficient number, since it is larger than the sum of its proper divisors (1166120017).

21011120303 is a wasteful number, since it uses less digits than its factorization.

21011120303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3013597.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 21011120303 its reverse (30302111012), we get a palindrome (51313231315).

The spelling of 21011120303 in words is "twenty-one billion, eleven million, one hundred twenty thousand, three hundred three".