104531252221 has 4 divisors (see below), whose sum is σ = 114034093344. Its totient is φ = 95028411100.

The previous prime is 104531252171. The next prime is 104531252261. The reversal of 104531252221 is 122252135401.

It is a happy number.

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 104531252221 - 2¹³ = 104531244029 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 104531252221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104531252261) 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, 4751420545 + ... + 4751420566.

It is an arithmetic number, because the mean of its divisors is an integer number (28508523336).

Almost surely, 2^104531252221 is an apocalyptic number.

104531252221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

104531252221 is a deficient number, since it is larger than the sum of its proper divisors (9502841123).

104531252221 is an equidigital number, since it uses as much as digits as its factorization.

104531252221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9502841122.

The product of its (nonzero) digits is 4800, while the sum is 28.

Adding to 104531252221 its reverse (122252135401), we get a palindrome (226783387622).

The spelling of 104531252221 in words is "one hundred four billion, five hundred thirty-one million, two hundred fifty-two thousand, two hundred twenty-one".