512236121101 has 4 divisors (see below), whose sum is σ = 512436450652. Its totient is φ = 512035791552.

The previous prime is 512236121083. The next prime is 512236121113. The reversal of 512236121101 is 101121632215.

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 195549684100 + 316686437001 = 442210^2 + 562749^2 .

It is a cyclic number.

It is not a de Polignac number, because 512236121101 - 2²⁷ = 512101903373 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 (512236121141) 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, 100160940 + ... + 100166053.

It is an arithmetic number, because the mean of its divisors is an integer number (128109112663).

Almost surely, 2^512236121101 is an apocalyptic number.

It is an amenable number.

512236121101 is a deficient number, since it is larger than the sum of its proper divisors (200329551).

512236121101 is a wasteful number, since it uses less digits than its factorization.

512236121101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200329550.

The product of its (nonzero) digits is 720, while the sum is 25.

Adding to 512236121101 its reverse (101121632215), we get a palindrome (613357753316).

The spelling of 512236121101 in words is "five hundred twelve billion, two hundred thirty-six million, one hundred twenty-one thousand, one hundred one".