502140211021 has 4 divisors (see below), whose sum is σ = 528568643200. Its totient is φ = 475711778844.

The previous prime is 502140211003. The next prime is 502140211031. The reversal of 502140211021 is 120112041205.

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 502140211021 - 2⁵ = 502140210989 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 26428432159 = 502140211021 / (5 + 0 + 2 + 1 + 4 + 0 + 2 + 1 + 1 + 0 + 2 + 1).

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 502140211021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (502140211031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13214216061 + ... + 13214216098.

It is an arithmetic number, because the mean of its divisors is an integer number (132142160800).

Almost surely, 2^502140211021 is an apocalyptic number.

It is an amenable number.

502140211021 is a deficient number, since it is larger than the sum of its proper divisors (26428432179).

502140211021 is a wasteful number, since it uses less digits than its factorization.

502140211021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26428432178.

The product of its (nonzero) digits is 160, while the sum is 19.

Adding to 502140211021 its reverse (120112041205), we get a palindrome (622252252226).

The spelling of 502140211021 in words is "five hundred two billion, one hundred forty million, two hundred eleven thousand, twenty-one".