205121094 has 32 divisors (see below), whose sum is σ = 425572224. Its totient is φ = 65862720.

The previous prime is 205121057. The next prime is 205121117. The reversal of 205121094 is 490121502.

205121094 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13389 + ... + 24279.

It is an arithmetic number, because the mean of its divisors is an integer number (13299132).

Almost surely, 2^205121094 is an apocalyptic number.

205121094 is an abundant number, since it is smaller than the sum of its proper divisors (220451130).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

205121094 is a wasteful number, since it uses less digits than its factorization.

205121094 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11012.

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 205121094 is about 14322.0492248840. The cubic root of 205121094 is about 589.7529311203.

Adding to 205121094 its reverse (490121502), we get a palindrome (695242596).

The spelling of 205121094 in words is "two hundred five million, one hundred twenty-one thousand, ninety-four".