21101311303 has 8 divisors (see below), whose sum is σ = 21150558000. Its totient is φ = 21052093440.

The previous prime is 21101311277. The next prime is 21101311313. The reversal of 21101311303 is 30311310112.

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

It is a cyclic number.

It is not a de Polignac number, because 21101311303 - 2³³ = 12511376711 is a prime.

It is a super-2 number, since 2×21101311303² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21101311313) 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, 2231301 + ... + 2240737.

It is an arithmetic number, because the mean of its divisors is an integer number (2643819750).

Almost surely, 2^21101311303 is an apocalyptic number.

21101311303 is a deficient number, since it is larger than the sum of its proper divisors (49246697).

21101311303 is an equidigital number, since it uses as much as digits as its factorization.

21101311303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14417.

The product of its (nonzero) digits is 54, while the sum is 16.

Adding to 21101311303 its reverse (30311310112), we get a palindrome (51412621415).

The spelling of 21101311303 in words is "twenty-one billion, one hundred one million, three hundred eleven thousand, three hundred three".