205400331122 has 32 divisors (see below), whose sum is σ = 353011785984. Its totient is φ = 87804763200.

The previous prime is 205400331107. The next prime is 205400331127. The reversal of 205400331122 is 221133004502.

It is not an unprimeable number, because it can be changed into a prime (205400331127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9363347 + ... + 9385257.

It is an arithmetic number, because the mean of its divisors is an integer number (11031618312).

Almost surely, 2^205400331122 is an apocalyptic number.

205400331122 is a deficient number, since it is larger than the sum of its proper divisors (147611454862).

205400331122 is a wasteful number, since it uses less digits than its factorization.

205400331122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23594.

The product of its (nonzero) digits is 1440, while the sum is 23.

Adding to 205400331122 its reverse (221133004502), we get a palindrome (426533335624).

The spelling of 205400331122 in words is "two hundred five billion, four hundred million, three hundred thirty-one thousand, one hundred twenty-two".