122443811281681 has 4 divisors (see below), whose sum is σ = 122558998311232. Its totient is φ = 122328624252132.

The previous prime is 122443811281657. The next prime is 122443811281769. The reversal of 122443811281681 is 186182118344221.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122443811281681 is a prime.

It is a super-2 number, since 2×122443811281681² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122443811281651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57593513181 + ... + 57593515306.

It is an arithmetic number, because the mean of its divisors is an integer number (30639749577808).

Almost surely, 2^{122443811281681} is an apocalyptic number.

It is an amenable number.

122443811281681 is a deficient number, since it is larger than the sum of its proper divisors (115187029551).

122443811281681 is a wasteful number, since it uses less digits than its factorization.

122443811281681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115187029550.

The product of its digits is 1179648, while the sum is 52.

The spelling of 122443811281681 in words is "one hundred twenty-two trillion, four hundred forty-three billion, eight hundred eleven million, two hundred eighty-one thousand, six hundred eighty-one".