21331030334 has 16 divisors (see below), whose sum is σ = 32315529840. Its totient is φ = 10559341440.

The previous prime is 21331030307. The next prime is 21331030349. The reversal of 21331030334 is 43303013312.

It is a super-2 number, since 2×21331030334² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 243542 + ... + 319334.

It is an arithmetic number, because the mean of its divisors is an integer number (2019720615).

Almost surely, 2^21331030334 is an apocalyptic number.

21331030334 is a deficient number, since it is larger than the sum of its proper divisors (10984499506).

21331030334 is a wasteful number, since it uses less digits than its factorization.

21331030334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77195.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 21331030334 its reverse (43303013312), we get a palindrome (64634043646).

The spelling of 21331030334 in words is "twenty-one billion, three hundred thirty-one million, thirty thousand, three hundred thirty-four".