205027121 has 8 divisors (see below), whose sum is σ = 220925544. Its totient is φ = 189146880.

The previous prime is 205027117. The next prime is 205027127. The reversal of 205027121 is 121720502.

205027121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 15689521 + 189337600 = 3961^2 + 13760^2 .

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

It is not a de Polignac number, because 205027121 - 2² = 205027117 is a prime.

It is a super-2 number, since 2×205027121² = 84072240691097282, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 205027093 and 205027102.

It is not an unprimeable number, because it can be changed into a prime (205027127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27065 + ... + 33801.

It is an arithmetic number, because the mean of its divisors is an integer number (27615693).

Almost surely, 2^205027121 is an apocalyptic number.

It is an amenable number.

205027121 is a deficient number, since it is larger than the sum of its proper divisors (15898423).

205027121 is a wasteful number, since it uses less digits than its factorization.

205027121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9091.

The product of its (nonzero) digits is 280, while the sum is 20.

The square root of 205027121 is about 14318.7681383560. The cubic root of 205027121 is about 589.6628553563.

Adding to 205027121 its reverse (121720502), we get a palindrome (326747623).

The spelling of 205027121 in words is "two hundred five million, twenty-seven thousand, one hundred twenty-one".