124401331111 has 2 divisors, whose sum is σ = 124401331112. Its totient is φ = 124401331110.

The previous prime is 124401331097. The next prime is 124401331123. The reversal of 124401331111 is 111133104421.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-124401331111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (124401331181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62200665555 + 62200665556.

It is an arithmetic number, because the mean of its divisors is an integer number (62200665556).

Almost surely, 2^124401331111 is an apocalyptic number.

124401331111 is a deficient number, since it is larger than the sum of its proper divisors (1).

124401331111 is an equidigital number, since it uses as much as digits as its factorization.

124401331111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 124401331111 its reverse (111133104421), we get a palindrome (235534435532).

The spelling of 124401331111 in words is "one hundred twenty-four billion, four hundred one million, three hundred thirty-one thousand, one hundred eleven".