93912101022221 has 4 divisors (see below), whose sum is σ = 93912158254332. Its totient is φ = 93912043790112.

The previous prime is 93912101022209. The next prime is 93912101022253. The reversal of 93912101022221 is 12222010121939.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 27158544040996 + 66753556981225 = 5211386^2 + 8170285^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-93912101022221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (93912101022521) 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, 26079776 + ... + 29461481.

It is an arithmetic number, because the mean of its divisors is an integer number (23478039563583).

Almost surely, 2^{93912101022221} is an apocalyptic number.

It is an amenable number.

93912101022221 is a deficient number, since it is larger than the sum of its proper divisors (57232111).

93912101022221 is a wasteful number, since it uses less digits than its factorization.

93912101022221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57232110.

The product of its (nonzero) digits is 7776, while the sum is 35.

The spelling of 93912101022221 in words is "ninety-three trillion, nine hundred twelve billion, one hundred one million, twenty-two thousand, two hundred twenty-one".