2212100993 has 4 divisors (see below), whose sum is σ = 2213514240. Its totient is φ = 2210687748.

The previous prime is 2212100953. The next prime is 2212100999. The reversal of 2212100993 is 3990012122.

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 a de Polignac number, because none of the positive numbers 2^k-2212100993 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 (2212100999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 704273 + ... + 707406.

It is an arithmetic number, because the mean of its divisors is an integer number (553378560).

Almost surely, 2^2212100993 is an apocalyptic number.

It is an amenable number.

2212100993 is a deficient number, since it is larger than the sum of its proper divisors (1413247).

2212100993 is a wasteful number, since it uses less digits than its factorization.

2212100993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1413246.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 2212100993 is about 47032.9777177673. The cubic root of 2212100993 is about 1302.9717013456.

The spelling of 2212100993 in words is "two billion, two hundred twelve million, one hundred thousand, nine hundred ninety-three".