21032311103 has 8 divisors (see below), whose sum is σ = 21916381680. Its totient is φ = 20158828480.

The previous prime is 21032311081. The next prime is 21032311109. The reversal of 21032311103 is 30111323012.

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 21032311103 - 2²⁴ = 21015533887 is a prime.

It is a super-2 number, since 2×21032311103² (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 (21032311109) 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, 2642933 + ... + 2650878.

It is an arithmetic number, because the mean of its divisors is an integer number (2739547710).

Almost surely, 2^21032311103 is an apocalyptic number.

21032311103 is a deficient number, since it is larger than the sum of its proper divisors (884070577).

21032311103 is a wasteful number, since it uses less digits than its factorization.

21032311103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5293977.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 21032311103 its reverse (30111323012), we get a palindrome (51143634115).

The spelling of 21032311103 in words is "twenty-one billion, thirty-two million, three hundred eleven thousand, one hundred three".