5101311221 has 4 divisors (see below), whose sum is σ = 5101455744. Its totient is φ = 5101166700.

The previous prime is 5101311169. The next prime is 5101311251. The reversal of 5101311221 is 1221131015.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 5101311221 - 2⁶ = 5101311157 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 5101311221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5101311251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19676 + ... + 102906.

It is an arithmetic number, because the mean of its divisors is an integer number (1275363936).

Almost surely, 2^5101311221 is an apocalyptic number.

It is an amenable number.

5101311221 is a deficient number, since it is larger than the sum of its proper divisors (144523).

5101311221 is an equidigital number, since it uses as much as digits as its factorization.

5101311221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144522.

The product of its (nonzero) digits is 60, while the sum is 17.

The square root of 5101311221 is about 71423.4640786906. The cubic root of 5101311221 is about 1721.4481247866.

Adding to 5101311221 its reverse (1221131015), we get a palindrome (6322442236).

The spelling of 5101311221 in words is "five billion, one hundred one million, three hundred eleven thousand, two hundred twenty-one".