11121667 has 2 divisors, whose sum is σ = 11121668. Its totient is φ = 11121666.

The previous prime is 11121661. The next prime is 11121683. The reversal of 11121667 is 76612111.

It is a happy number.

11121667 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11121667 is a prime.

It is equal to p₇₃₄₀₄₇ and since 11121667 and 734047 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (11121661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5560833 + 5560834.

It is an arithmetic number, because the mean of its divisors is an integer number (5560834).

Almost surely, 2^11121667 is an apocalyptic number.

11121667 is a deficient number, since it is larger than the sum of its proper divisors (1).

11121667 is an equidigital number, since it uses as much as digits as its factorization.

11121667 is an evil number, because the sum of its binary digits is even.

The product of its digits is 504, while the sum is 25.

The square root of 11121667 is about 3334.9163407798. The cubic root of 11121667 is about 223.2149589264.

Adding to 11121667 its reverse (76612111), we get a palindrome (87733778).

The spelling of 11121667 in words is "eleven million, one hundred twenty-one thousand, six hundred sixty-seven".