204220221415 has 32 divisors (see below), whose sum is σ = 285214325760. Its totient is φ = 137472850944.

The previous prime is 204220221307. The next prime is 204220221427. The reversal of 204220221415 is 514122022402.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 204220221415 - 2¹⁵ = 204220188647 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 204220221415.

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 31 ways as a sum of consecutive naturals, for example, 1433239 + ... + 1569271.

It is an arithmetic number, because the mean of its divisors is an integer number (8912947680).

Almost surely, 2^204220221415 is an apocalyptic number.

204220221415 is a deficient number, since it is larger than the sum of its proper divisors (80994104345).

204220221415 is a wasteful number, since it uses less digits than its factorization.

204220221415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136831.

The product of its (nonzero) digits is 2560, while the sum is 25.

Adding to 204220221415 its reverse (514122022402), we get a palindrome (718342243817).

The spelling of 204220221415 in words is "two hundred four billion, two hundred twenty million, two hundred twenty-one thousand, four hundred fifteen".