124421111 has 2 divisors, whose sum is σ = 124421112. Its totient is φ = 124421110.

The previous prime is 124421083. The next prime is 124421119. The reversal of 124421111 is 111124421.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-124421111 is a prime.

It is a super-2 number, since 2×124421111² = 30961225724948642, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 124421111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (124421119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62210555 + 62210556.

It is an arithmetic number, because the mean of its divisors is an integer number (62210556).

Almost surely, 2^124421111 is an apocalyptic number.

124421111 is a deficient number, since it is larger than the sum of its proper divisors (1).

124421111 is an equidigital number, since it uses as much as digits as its factorization.

124421111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64, while the sum is 17.

The square root of 124421111 is about 11154.4211414129. The cubic root of 124421111 is about 499.2269534139.

Adding to 124421111 its reverse (111124421), we get a palindrome (235545532).

The spelling of 124421111 in words is "one hundred twenty-four million, four hundred twenty-one thousand, one hundred eleven".