21224521546366 has 8 divisors (see below), whose sum is σ = 32164996570560. Its totient is φ = 10502856022848.

The previous prime is 21224521546337. The next prime is 21224521546373. The reversal of 21224521546366 is 66364512542212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54702374926 + ... + 54702375313.

It is an arithmetic number, because the mean of its divisors is an integer number (4020624571320).

Almost surely, 2^{21224521546366} is an apocalyptic number.

21224521546366 is a deficient number, since it is larger than the sum of its proper divisors (10940475024194).

21224521546366 is a wasteful number, since it uses less digits than its factorization.

21224521546366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109404750338.

The product of its digits is 4147200, while the sum is 49.

The spelling of 21224521546366 in words is "twenty-one trillion, two hundred twenty-four billion, five hundred twenty-one million, five hundred forty-six thousand, three hundred sixty-six".