501121335201 has 4 divisors (see below), whose sum is σ = 668161780272. Its totient is φ = 334080890132.

The previous prime is 501121335199. The next prime is 501121335229. The reversal of 501121335201 is 102533121105.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 501121335201 - 2¹ = 501121335199 is a prime.

It is a super-2 number, since 2×501121335201² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (501121335401) 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, 83520222531 + ... + 83520222536.

It is an arithmetic number, because the mean of its divisors is an integer number (167040445068).

Almost surely, 2^501121335201 is an apocalyptic number.

It is an amenable number.

501121335201 is a deficient number, since it is larger than the sum of its proper divisors (167040445071).

501121335201 is a wasteful number, since it uses less digits than its factorization.

501121335201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167040445070.

The product of its (nonzero) digits is 900, while the sum is 24.

Adding to 501121335201 its reverse (102533121105), we get a palindrome (603654456306).

The spelling of 501121335201 in words is "five hundred one billion, one hundred twenty-one million, three hundred thirty-five thousand, two hundred one".