122154140239 has 2 divisors, whose sum is σ = 122154140240. Its totient is φ = 122154140238.

The previous prime is 122154140209. The next prime is 122154140327. The reversal of 122154140239 is 932041451221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 122154140239 - 2¹¹ = 122154138191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122154140209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61077070119 + 61077070120.

It is an arithmetic number, because the mean of its divisors is an integer number (61077070120).

Almost surely, 2^122154140239 is an apocalyptic number.

122154140239 is a deficient number, since it is larger than the sum of its proper divisors (1).

122154140239 is an equidigital number, since it uses as much as digits as its factorization.

122154140239 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 34.

The spelling of 122154140239 in words is "one hundred twenty-two billion, one hundred fifty-four million, one hundred forty thousand, two hundred thirty-nine".