42211111 has 2 divisors, whose sum is σ = 42211112. Its totient is φ = 42211110.

The previous prime is 42211093. The next prime is 42211129. The reversal of 42211111 is 11111224.

It is a balanced prime because it is at equal distance from previous prime (42211093) and next prime (42211129).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42211111 is a prime.

42211111 is a modest number, since divided by 11111 gives 422 as remainder.

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 42211091 and 42211100.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42211171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21105555 + 21105556.

It is an arithmetic number, because the mean of its divisors is an integer number (21105556).

Almost surely, 2^42211111 is an apocalyptic number.

42211111 is a deficient number, since it is larger than the sum of its proper divisors (1).

42211111 is an equidigital number, since it uses as much as digits as its factorization.

42211111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16, while the sum is 13.

The square root of 42211111 is about 6497.0078497721. The cubic root of 42211111 is about 348.1840941448.

Adding to 42211111 its reverse (11111224), we get a palindrome (53322335).

The spelling of 42211111 in words is "forty-two million, two hundred eleven thousand, one hundred eleven".