205412101 has 4 divisors (see below), whose sum is σ = 206293932. Its totient is φ = 204530272.

The previous prime is 205412029. The next prime is 205412117. The reversal of 205412101 is 101214502.

205412101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 17859076 + 187553025 = 4226^2 + 13695^2 .

It is a cyclic number.

It is not a de Polignac number, because 205412101 - 2⁹ = 205411589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205419101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 440566 + ... + 441031.

It is an arithmetic number, because the mean of its divisors is an integer number (51573483).

Almost surely, 2^205412101 is an apocalyptic number.

It is an amenable number.

205412101 is a deficient number, since it is larger than the sum of its proper divisors (881831).

205412101 is an equidigital number, since it uses as much as digits as its factorization.

205412101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 881830.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 205412101 is about 14332.2050292340. The cubic root of 205412101 is about 590.0316951277.

Adding to 205412101 its reverse (101214502), we get a palindrome (306626603).

The spelling of 205412101 in words is "two hundred five million, four hundred twelve thousand, one hundred one".