501011122131001 has 8 divisors (see below), whose sum is σ = 513155962816640. Its totient is φ = 488888709592752.

The previous prime is 501011122130923. The next prime is 501011122131007. The reversal of 501011122131001 is 100131221110105.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 501011122131001 - 2¹⁷ = 501011121999929 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 501011122131001.

It is not an unprimeable number, because it can be changed into a prime (501011122131007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5606991630 + ... + 5607080983.

It is an arithmetic number, because the mean of its divisors is an integer number (64144495352080).

Almost surely, 2^{501011122131001} is an apocalyptic number.

It is an amenable number.

501011122131001 is a deficient number, since it is larger than the sum of its proper divisors (12144840685639).

501011122131001 is a wasteful number, since it uses less digits than its factorization.

501011122131001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11214073695.

The product of its (nonzero) digits is 60, while the sum is 19.

Adding to 501011122131001 its reverse (100131221110105), we get a palindrome (601142343241106).

The spelling of 501011122131001 in words is "five hundred one trillion, eleven billion, one hundred twenty-two million, one hundred thirty-one thousand, one".