124221211 has 2 divisors, whose sum is σ = 124221212. Its totient is φ = 124221210.

The previous prime is 124221199. The next prime is 124221257. The reversal of 124221211 is 112122421.

It is a weak prime.

It is an emirp because it is prime and its reverse (112122421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 124221211 - 2⁵ = 124221179 is a prime.

It is not a weakly prime, because it can be changed into another prime (124221271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62110605 + 62110606.

It is an arithmetic number, because the mean of its divisors is an integer number (62110606).

Almost surely, 2^124221211 is an apocalyptic number.

124221211 is a deficient number, since it is larger than the sum of its proper divisors (1).

124221211 is an equidigital number, since it uses as much as digits as its factorization.

124221211 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 124221211 is about 11145.4569668543. The cubic root of 124221211 is about 498.9594506831.

Adding to 124221211 its reverse (112122421), we get a palindrome (236343632).

The spelling of 124221211 in words is "one hundred twenty-four million, two hundred twenty-one thousand, two hundred eleven".