11922011 has 4 divisors (see below), whose sum is σ = 12306624. Its totient is φ = 11537400.

The previous prime is 11922007. The next prime is 11922013. The reversal of 11922011 is 11022911.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11922011 - 2² = 11922007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11922013) 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, 192260 + ... + 192321.

It is an arithmetic number, because the mean of its divisors is an integer number (3076656).

Almost surely, 2^11922011 is an apocalyptic number.

11922011 is a deficient number, since it is larger than the sum of its proper divisors (384613).

11922011 is an equidigital number, since it uses as much as digits as its factorization.

11922011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384612.

The product of its (nonzero) digits is 36, while the sum is 17.

The square root of 11922011 is about 3452.8265232994. The cubic root of 11922011 is about 228.4457972743.

Adding to 11922011 its reverse (11022911), we get a palindrome (22944922).

The spelling of 11922011 in words is "eleven million, nine hundred twenty-two thousand, eleven".