511020120241 has 4 divisors (see below), whose sum is σ = 541080127332. Its totient is φ = 480960113152.

The previous prime is 511020120223. The next prime is 511020120263. The reversal of 511020120241 is 142021020115.

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 411477346225 + 99542774016 = 641465^2 + 315504^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-511020120241 is a prime.

It is a super-2 number, since 2×511020120241² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (511020120641) 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, 15030003520 + ... + 15030003553.

It is an arithmetic number, because the mean of its divisors is an integer number (135270031833).

Almost surely, 2^511020120241 is an apocalyptic number.

It is an amenable number.

511020120241 is a deficient number, since it is larger than the sum of its proper divisors (30060007091).

511020120241 is a wasteful number, since it uses less digits than its factorization.

511020120241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30060007090.

The product of its (nonzero) digits is 160, while the sum is 19.

Adding to 511020120241 its reverse (142021020115), we get a palindrome (653041140356).

The spelling of 511020120241 in words is "five hundred eleven billion, twenty million, one hundred twenty thousand, two hundred forty-one".