21227504330 has 16 divisors (see below), whose sum is σ = 40220534880. Its totient is φ = 8044106832.

The previous prime is 21227504329. The next prime is 21227504357. The reversal of 21227504330 is 3340572212.

It is a junction number, because it is equal to n+sod(n) for n = 21227504293 and 21227504302.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55861664 + ... + 55862043.

It is an arithmetic number, because the mean of its divisors is an integer number (2513783430).

Almost surely, 2^21227504330 is an apocalyptic number.

21227504330 is a deficient number, since it is larger than the sum of its proper divisors (18993030550).

21227504330 is a wasteful number, since it uses less digits than its factorization.

21227504330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111723733.

The product of its (nonzero) digits is 10080, while the sum is 29.

The spelling of 21227504330 in words is "twenty-one billion, two hundred twenty-seven million, five hundred four thousand, three hundred thirty".