124122404221381 has 2 divisors, whose sum is σ = 124122404221382. Its totient is φ = 124122404221380.

The previous prime is 124122404221369. The next prime is 124122404221457. The reversal of 124122404221381 is 183122404221421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 108585444748356 + 15536959473025 = 10420434^2 + 3941695^2 .

It is a cyclic number.

It is not a de Polignac number, because 124122404221381 - 2³³ = 124113814286789 is a prime.

It is a super-2 number, since 2×124122404221381² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 124122404221381.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (124122404221301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62061202110690 + 62061202110691.

It is an arithmetic number, because the mean of its divisors is an integer number (62061202110691).

Almost surely, 2^{124122404221381} is an apocalyptic number.

It is an amenable number.

124122404221381 is a deficient number, since it is larger than the sum of its proper divisors (1).

124122404221381 is an equidigital number, since it uses as much as digits as its factorization.

124122404221381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 49152, while the sum is 37.

The spelling of 124122404221381 in words is "one hundred twenty-four trillion, one hundred twenty-two billion, four hundred four million, two hundred twenty-one thousand, three hundred eighty-one".