501121041123 has 8 divisors (see below), whose sum is σ = 668520429136. Its totient is φ = 333901173600.

The previous prime is 501121041089. The next prime is 501121041163. The reversal of 501121041123 is 321140121105.

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

It is not a de Polignac number, because 501121041123 - 2¹⁰ = 501121040099 is a prime.

It is a super-2 number, since 2×501121041123² (a number of 24 digits) contains 22 as substring.

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 501121041123.

It is not an unprimeable number, because it can be changed into a prime (501121041163) 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, 44873608 + ... + 44884773.

It is an arithmetic number, because the mean of its divisors is an integer number (83565053642).

Almost surely, 2^501121041123 is an apocalyptic number.

501121041123 is a deficient number, since it is larger than the sum of its proper divisors (167399388013).

501121041123 is a wasteful number, since it uses less digits than its factorization.

501121041123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89760245.

The product of its (nonzero) digits is 240, while the sum is 21.

Adding to 501121041123 its reverse (321140121105), we get a palindrome (822261162228).

The spelling of 501121041123 in words is "five hundred one billion, one hundred twenty-one million, forty-one thousand, one hundred twenty-three".