205124230311001 has 4 divisors (see below), whose sum is σ = 212197479632100. Its totient is φ = 198050980989904.

The previous prime is 205124230310969. The next prime is 205124230311031. The reversal of 205124230311001 is 100113032421502.

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 152913504272400 + 52210726038601 = 12365820^2 + 7225699^2 .

It is a cyclic number.

It is not a de Polignac number, because 205124230311001 - 2⁵ = 205124230310969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (205124230311031) 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, 3536624660506 + ... + 3536624660563.

It is an arithmetic number, because the mean of its divisors is an integer number (53049369908025).

Almost surely, 2^{205124230311001} is an apocalyptic number.

It is an amenable number.

205124230311001 is a deficient number, since it is larger than the sum of its proper divisors (7073249321099).

205124230311001 is an equidigital number, since it uses as much as digits as its factorization.

205124230311001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7073249321098.

The product of its (nonzero) digits is 1440, while the sum is 25.

Adding to 205124230311001 its reverse (100113032421502), we get a palindrome (305237262732503).

The spelling of 205124230311001 in words is "two hundred five trillion, one hundred twenty-four billion, two hundred thirty million, three hundred eleven thousand, one".