2221220212193 has 4 divisors (see below), whose sum is σ = 2221227403668. Its totient is φ = 2221213020720.

The previous prime is 2221220212187. The next prime is 2221220212207. The reversal of 2221220212193 is 3912120221222.

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 1773139917649 + 448080294544 = 1331593^2 + 669388^2 .

It is a cyclic number.

It is not a de Polignac number, because 2221220212193 - 2¹⁰ = 2221220211169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2221220212103) 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, 3110618 + ... + 3757443.

It is an arithmetic number, because the mean of its divisors is an integer number (555306850917).

Almost surely, 2^{2221220212193} is an apocalyptic number.

It is an amenable number.

2221220212193 is a deficient number, since it is larger than the sum of its proper divisors (7191475).

2221220212193 is an equidigital number, since it uses as much as digits as its factorization.

2221220212193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7191474.

The product of its (nonzero) digits is 3456, while the sum is 29.

The spelling of 2221220212193 in words is "two trillion, two hundred twenty-one billion, two hundred twenty million, two hundred twelve thousand, one hundred ninety-three".