205222421315 has 8 divisors (see below), whose sum is σ = 246340241280. Its totient is φ = 164129046592.

The previous prime is 205222421281. The next prime is 205222421357. The reversal of 205222421315 is 513124222502.

It is a happy number.

205222421315 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 205222421315 - 2¹⁸ = 205222159171 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6092834 + ... + 6126423.

It is an arithmetic number, because the mean of its divisors is an integer number (30792530160).

Almost surely, 2^205222421315 is an apocalyptic number.

205222421315 is a deficient number, since it is larger than the sum of its proper divisors (41117819965).

205222421315 is a wasteful number, since it uses less digits than its factorization.

205222421315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12222621.

The product of its (nonzero) digits is 9600, while the sum is 29.

Adding to 205222421315 its reverse (513124222502), we get a palindrome (718346643817).

The spelling of 205222421315 in words is "two hundred five billion, two hundred twenty-two million, four hundred twenty-one thousand, three hundred fifteen".