205155415222 has 8 divisors (see below), whose sum is σ = 308703890736. Its totient is φ = 102254118312.

The previous prime is 205155415207. The next prime is 205155415247. The reversal of 205155415222 is 222514551502.

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

It is a super-2 number, since 2×205155415222² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 161793858 + ... + 161795125.

It is an arithmetic number, because the mean of its divisors is an integer number (38587986342).

Almost surely, 2^205155415222 is an apocalyptic number.

205155415222 is a deficient number, since it is larger than the sum of its proper divisors (103548475514).

205155415222 is a wasteful number, since it uses less digits than its factorization.

205155415222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323589302.

The product of its (nonzero) digits is 40000, while the sum is 34.

Adding to 205155415222 its reverse (222514551502), we get a palindrome (427669966724).

The spelling of 205155415222 in words is "two hundred five billion, one hundred fifty-five million, four hundred fifteen thousand, two hundred twenty-two".