122154846389 has 2 divisors, whose sum is σ = 122154846390. Its totient is φ = 122154846388.

The previous prime is 122154846353. The next prime is 122154846409. The reversal of 122154846389 is 983648451221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 111250265764 + 10904580625 = 333542^2 + 104425^2 .

It is a cyclic number.

It is not a de Polignac number, because 122154846389 - 2³⁶ = 53435369653 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 122154846389.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122154846329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61077423194 + 61077423195.

It is an arithmetic number, because the mean of its divisors is an integer number (61077423195).

Almost surely, 2^122154846389 is an apocalyptic number.

It is an amenable number.

122154846389 is a deficient number, since it is larger than the sum of its proper divisors (1).

122154846389 is an equidigital number, since it uses as much as digits as its factorization.

122154846389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3317760, while the sum is 53.

The spelling of 122154846389 in words is "one hundred twenty-two billion, one hundred fifty-four million, eight hundred forty-six thousand, three hundred eighty-nine".