121626272389 has 2 divisors, whose sum is σ = 121626272390. Its totient is φ = 121626272388.

The previous prime is 121626272357. The next prime is 121626272429. The reversal of 121626272389 is 983272626121.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73913296900 + 47712975489 = 271870^2 + 218433^2 .

It is a cyclic number.

It is not a de Polignac number, because 121626272389 - 2⁵ = 121626272357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121626272189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60813136194 + 60813136195.

It is an arithmetic number, because the mean of its divisors is an integer number (60813136195).

Almost surely, 2^121626272389 is an apocalyptic number.

It is an amenable number.

121626272389 is a deficient number, since it is larger than the sum of its proper divisors (1).

121626272389 is an equidigital number, since it uses as much as digits as its factorization.

121626272389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 870912, while the sum is 49.

The spelling of 121626272389 in words is "one hundred twenty-one billion, six hundred twenty-six million, two hundred seventy-two thousand, three hundred eighty-nine".