11442121 has 2 divisors, whose sum is σ = 11442122. Its totient is φ = 11442120.

The previous prime is 11442113. The next prime is 11442127. The reversal of 11442121 is 12124411.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6553600 + 4888521 = 2560^2 + 2211^2 .

It is a cyclic number.

It is not a de Polignac number, because 11442121 - 2³ = 11442113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11442095 and 11442104.

It is not a weakly prime, because it can be changed into another prime (11442127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5721060 + 5721061.

It is an arithmetic number, because the mean of its divisors is an integer number (5721061).

Almost surely, 2^11442121 is an apocalyptic number.

It is an amenable number.

11442121 is a deficient number, since it is larger than the sum of its proper divisors (1).

11442121 is an equidigital number, since it uses as much as digits as its factorization.

11442121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64, while the sum is 16.

The square root of 11442121 is about 3382.6204339240. The cubic root of 11442121 is about 225.3385586264.

Adding to 11442121 its reverse (12124411), we get a palindrome (23566532).

The spelling of 11442121 in words is "eleven million, four hundred forty-two thousand, one hundred twenty-one".