221565822480650 has 48 divisors (see below), whose sum is σ = 436903848983040. Its totient is φ = 83449376884800.

The previous prime is 221565822480601. The next prime is 221565822480703. The reversal of 221565822480650 is 56084228565122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1931641190 + ... + 1931755889.

It is an arithmetic number, because the mean of its divisors is an integer number (9102163520480).

Almost surely, 2^{221565822480650} is an apocalyptic number.

221565822480650 is a deficient number, since it is larger than the sum of its proper divisors (215338026502390).

221565822480650 is a wasteful number, since it uses less digits than its factorization.

221565822480650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3863397159 (or 3863397154 counting only the distinct ones).

The product of its (nonzero) digits is 18432000, while the sum is 56.

The spelling of 221565822480650 in words is "two hundred twenty-one trillion, five hundred sixty-five billion, eight hundred twenty-two million, four hundred eighty thousand, six hundred fifty".