104012332155221 has 12 divisors (see below), whose sum is σ = 121008150733932. Its totient is φ = 89142954582528.

The previous prime is 104012332155217. The next prime is 104012332155229. The reversal of 104012332155221 is 122551233210401.

It can be written as a sum of positive squares in 2 ways, for example, as 47304820622500 + 56707511532721 = 6877850^2 + 7530439^2 .

It is not a de Polignac number, because 104012332155221 - 2² = 104012332155217 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104012332155229) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 124256930 + ... + 125091203.

It is an arithmetic number, because the mean of its divisors is an integer number (10084012561161).

Almost surely, 2^{104012332155221} is an apocalyptic number.

It is an amenable number.

104012332155221 is a deficient number, since it is larger than the sum of its proper divisors (16995818578711).

104012332155221 is an equidigital number, since it uses as much as digits as its factorization.

104012332155221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249356660 (or 249356653 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 32.

Adding to 104012332155221 its reverse (122551233210401), we get a palindrome (226563565365622).

The spelling of 104012332155221 in words is "one hundred four trillion, twelve billion, three hundred thirty-two million, one hundred fifty-five thousand, two hundred twenty-one".