1099211 has 4 divisors (see below), whose sum is σ = 1109592. Its totient is φ = 1088832.

The previous prime is 1099199. The next prime is 1099223. The reversal of 1099211 is 1129901.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1129901 = 281 ⋅4021.

It is an interprime number because it is at equal distance from previous prime (1099199) and next prime (1099223).

It is not a de Polignac number, because 1099211 - 2¹⁰ = 1098187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1099261) 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, 5030 + ... + 5243.

It is an arithmetic number, because the mean of its divisors is an integer number (277398).

2^1099211 is an apocalyptic number.

1099211 is a deficient number, since it is larger than the sum of its proper divisors (10381).

1099211 is a wasteful number, since it uses less digits than its factorization.

1099211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10380.

The product of its (nonzero) digits is 162, while the sum is 23.

The square root of 1099211 is about 1048.4326397056. The cubic root of 1099211 is about 103.2033247632.

The spelling of 1099211 in words is "one million, ninety-nine thousand, two hundred eleven".