124454221013 has 2 divisors, whose sum is σ = 124454221014. Its totient is φ = 124454221012.

The previous prime is 124454220977. The next prime is 124454221019. The reversal of 124454221013 is 310122454421.

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., 93053672209 + 31400548804 = 305047^2 + 177202^2 .

It is a cyclic number.

It is not a de Polignac number, because 124454221013 - 2⁶ = 124454220949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (124454221019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62227110506 + 62227110507.

It is an arithmetic number, because the mean of its divisors is an integer number (62227110507).

Almost surely, 2^124454221013 is an apocalyptic number.

It is an amenable number.

124454221013 is a deficient number, since it is larger than the sum of its proper divisors (1).

124454221013 is an equidigital number, since it uses as much as digits as its factorization.

124454221013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7680, while the sum is 29.

Adding to 124454221013 its reverse (310122454421), we get a palindrome (434576675434).

The spelling of 124454221013 in words is "one hundred twenty-four billion, four hundred fifty-four million, two hundred twenty-one thousand, thirteen".