2221133915993 has 4 divisors (see below), whose sum is σ = 2221222443060. Its totient is φ = 2221045388928.

The previous prime is 2221133915983. The next prime is 2221133915999. The reversal of 2221133915993 is 3995193311222.

It is a happy number.

2221133915993 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 1386299017744 + 834834898249 = 1177412^2 + 913693^2 .

It is a cyclic number.

It is not a de Polignac number, because 2221133915993 - 2¹⁰ = 2221133914969 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2221133915999) 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, 44225888 + ... + 44276081.

It is an arithmetic number, because the mean of its divisors is an integer number (555305610765).

Almost surely, 2^{2221133915993} is an apocalyptic number.

It is an amenable number.

2221133915993 is a deficient number, since it is larger than the sum of its proper divisors (88527067).

2221133915993 is an equidigital number, since it uses as much as digits as its factorization.

2221133915993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88527066.

The product of its digits is 787320, while the sum is 50.

The spelling of 2221133915993 in words is "two trillion, two hundred twenty-one billion, one hundred thirty-three million, nine hundred fifteen thousand, nine hundred ninety-three".