504220121351 has 4 divisors (see below), whose sum is σ = 511745794872. Its totient is φ = 496694447832.

The previous prime is 504220121341. The next prime is 504220121411. The reversal of 504220121351 is 153121022405.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-504220121351 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 504220121351.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (504220121341) 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, 3762836660 + ... + 3762836793.

It is an arithmetic number, because the mean of its divisors is an integer number (127936448718).

Almost surely, 2^504220121351 is an apocalyptic number.

504220121351 is a deficient number, since it is larger than the sum of its proper divisors (7525673521).

504220121351 is an equidigital number, since it uses as much as digits as its factorization.

504220121351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7525673520.

The product of its (nonzero) digits is 2400, while the sum is 26.

Adding to 504220121351 its reverse (153121022405), we get a palindrome (657341143756).

The spelling of 504220121351 in words is "five hundred four billion, two hundred twenty million, one hundred twenty-one thousand, three hundred fifty-one".