2211993 has 12 divisors (see below), whose sum is σ = 3651648. Its totient is φ = 1263960.

The previous prime is 2211983. The next prime is 2211997. The reversal of 2211993 is 3991122.

It is not a de Polignac number, because 2211993 - 2⁴ = 2211977 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2211997) 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, 17493 + ... + 17618.

It is an arithmetic number, because the mean of its divisors is an integer number (304304).

2^2211993 is an apocalyptic number.

It is an amenable number.

2211993 is a deficient number, since it is larger than the sum of its proper divisors (1439655).

2211993 is a wasteful number, since it uses less digits than its factorization.

2211993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35124 (or 35121 counting only the distinct ones).

The product of its digits is 972, while the sum is 27.

The square root of 2211993 is about 1487.2770421142. The cubic root of 2211993 is about 130.2950497655.

The spelling of 2211993 in words is "two million, two hundred eleven thousand, nine hundred ninety-three".