505121051213 has 16 divisors (see below), whose sum is σ = 524897822592. Its totient is φ = 485729160000.

The previous prime is 505121051209. The next prime is 505121051219. The reversal of 505121051213 is 312150121505.

It is a cyclic number.

It is not a de Polignac number, because 505121051213 - 2² = 505121051209 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 (505121051219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2022143 + ... + 2258163.

It is an arithmetic number, because the mean of its divisors is an integer number (32806113912).

Almost surely, 2^505121051213 is an apocalyptic number.

It is an amenable number.

505121051213 is a deficient number, since it is larger than the sum of its proper divisors (19776771379).

505121051213 is a wasteful number, since it uses less digits than its factorization.

505121051213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236836.

The product of its (nonzero) digits is 1500, while the sum is 26.

Adding to 505121051213 its reverse (312150121505), we get a palindrome (817271172718).

The spelling of 505121051213 in words is "five hundred five billion, one hundred twenty-one million, fifty-one thousand, two hundred thirteen".