11822101 has 4 divisors (see below), whose sum is σ = 11850604. Its totient is φ = 11793600.

The previous prime is 11822093. The next prime is 11822143. The reversal of 11822101 is 10122811.

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 998001 + 10824100 = 999^2 + 3290^2 .

It is a cyclic number.

It is not a de Polignac number, because 11822101 - 2³ = 11822093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11822201) 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, 13620 + ... + 14461.

It is an arithmetic number, because the mean of its divisors is an integer number (2962651).

Almost surely, 2^11822101 is an apocalyptic number.

It is an amenable number.

11822101 is a deficient number, since it is larger than the sum of its proper divisors (28503).

11822101 is an equidigital number, since it uses as much as digits as its factorization.

11822101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28502.

The product of its (nonzero) digits is 32, while the sum is 16.

The square root of 11822101 is about 3438.3282274966. The cubic root of 11822101 is about 227.8058583840.

Adding to 11822101 its reverse (10122811), we get a palindrome (21944912).

The spelling of 11822101 in words is "eleven million, eight hundred twenty-two thousand, one hundred one".