21331103013 has 24 divisors (see below), whose sum is σ = 33628008960. Its totient is φ = 12922032960.

The previous prime is 21331102997. The next prime is 21331103029. The reversal of 21331103013 is 31030113312.

It is a happy number.

21331103013 is a `hidden beast` number, since 21 + 331 + 10 + 301 + 3 = 666.

It is an interprime number because it is at equal distance from previous prime (21331102997) and next prime (21331103029).

It is not a de Polignac number, because 21331103013 - 2⁴ = 21331102997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21331103083) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 173545 + ... + 269777.

It is an arithmetic number, because the mean of its divisors is an integer number (1401167040).

Almost surely, 2^21331103013 is an apocalyptic number.

It is an amenable number.

21331103013 is a deficient number, since it is larger than the sum of its proper divisors (12296905947).

21331103013 is a wasteful number, since it uses less digits than its factorization.

21331103013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98489 (or 98486 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

Adding to 21331103013 its reverse (31030113312), we get a palindrome (52361216325).

The spelling of 21331103013 in words is "twenty-one billion, three hundred thirty-one million, one hundred three thousand, thirteen".