11821427 has 2 divisors, whose sum is σ = 11821428. Its totient is φ = 11821426.

The previous prime is 11821399. The next prime is 11821451. The reversal of 11821427 is 72412811.

11821427 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11821427 - 2²⁰ = 10772851 is a prime.

It is a super-2 number, since 2×11821427² = 279492272632658, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11821396 and 11821405.

It is not a weakly prime, because it can be changed into another prime (11821027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5910713 + 5910714.

It is an arithmetic number, because the mean of its divisors is an integer number (5910714).

Almost surely, 2^11821427 is an apocalyptic number.

11821427 is a deficient number, since it is larger than the sum of its proper divisors (1).

11821427 is an equidigital number, since it uses as much as digits as its factorization.

11821427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 896, while the sum is 26.

The square root of 11821427 is about 3438.2302133510. The cubic root of 11821427 is about 227.8015290896.

The spelling of 11821427 in words is "eleven million, eight hundred twenty-one thousand, four hundred twenty-seven".