205415222422 has 4 divisors (see below), whose sum is σ = 308122833636. Its totient is φ = 102707611210.

The previous prime is 205415222381. The next prime is 205415222429. The reversal of 205415222422 is 224222514502.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205415222429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51353805604 + ... + 51353805607.

It is an arithmetic number, because the mean of its divisors is an integer number (77030708409).

Almost surely, 2^205415222422 is an apocalyptic number.

205415222422 is a deficient number, since it is larger than the sum of its proper divisors (102707611214).

205415222422 is a wasteful number, since it uses less digits than its factorization.

205415222422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102707611213.

The product of its (nonzero) digits is 25600, while the sum is 31.

Adding to 205415222422 its reverse (224222514502), we get a palindrome (429637736924).

The spelling of 205415222422 in words is "two hundred five billion, four hundred fifteen million, two hundred twenty-two thousand, four hundred twenty-two".