122154762441 has 4 divisors (see below), whose sum is σ = 162873016592. Its totient is φ = 81436508292.

The previous prime is 122154762439. The next prime is 122154762473. The reversal of 122154762441 is 144267451221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 144267451221 = 3 ⋅48089150407.

It is not a de Polignac number, because 122154762441 - 2¹ = 122154762439 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 122154762441.

It is not an unprimeable number, because it can be changed into a prime (122154761441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20359127071 + ... + 20359127076.

It is an arithmetic number, because the mean of its divisors is an integer number (40718254148).

Almost surely, 2^122154762441 is an apocalyptic number.

It is an amenable number.

122154762441 is a deficient number, since it is larger than the sum of its proper divisors (40718254151).

122154762441 is an equidigital number, since it uses as much as digits as its factorization.

122154762441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40718254150.

The product of its digits is 107520, while the sum is 39.

The spelling of 122154762441 in words is "one hundred twenty-two billion, one hundred fifty-four million, seven hundred sixty-two thousand, four hundred forty-one".