21331011056330 has 16 divisors (see below), whose sum is σ = 38402331084360. Its totient is φ = 8530957492992.

The previous prime is 21331011056297. The next prime is 21331011056363. The reversal of 21331011056330 is 3365011013312.

It is an interprime number because it is at equal distance from previous prime (21331011056297) and next prime (21331011056363).

It can be written as a sum of positive squares in 4 ways, for example, as 20592454727881 + 738556328449 = 4537891^2 + 859393^2 .

It is a junction number, because it is equal to n+sod(n) for n = 21331011056293 and 21331011056302.

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, 180804275 + ... + 180922214.

Almost surely, 2^{21331011056330} is an apocalyptic number.

21331011056330 is a deficient number, since it is larger than the sum of its proper divisors (17071320028030).

21331011056330 is a wasteful number, since it uses less digits than its factorization.

21331011056330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361732393.

The product of its (nonzero) digits is 4860, while the sum is 29.

Adding to 21331011056330 its reverse (3365011013312), we get a palindrome (24696022069642).

The spelling of 21331011056330 in words is "twenty-one trillion, three hundred thirty-one billion, eleven million, fifty-six thousand, three hundred thirty".