121244443129 has 2 divisors, whose sum is σ = 121244443130. Its totient is φ = 121244443128.

The previous prime is 121244443079. The next prime is 121244443157. The reversal of 121244443129 is 921344442121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72293765625 + 48950677504 = 268875^2 + 221248^2 .

It is an emirp because it is prime and its reverse (921344442121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121244443129 - 2⁹ = 121244442617 is a prime.

It is a super-2 number, since 2×121244443129² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (121244443829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60622221564 + 60622221565.

It is an arithmetic number, because the mean of its divisors is an integer number (60622221565).

Almost surely, 2^121244443129 is an apocalyptic number.

It is an amenable number.

121244443129 is a deficient number, since it is larger than the sum of its proper divisors (1).

121244443129 is an equidigital number, since it uses as much as digits as its factorization.

121244443129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 55296, while the sum is 37.

The spelling of 121244443129 in words is "one hundred twenty-one billion, two hundred forty-four million, four hundred forty-three thousand, one hundred twenty-nine".