122655215081 has 8 divisors (see below), whose sum is σ = 143965967040. Its totient is φ = 102291607728.

The previous prime is 122655215077. The next prime is 122655215119. The reversal of 122655215081 is 180512556221.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 122655215081 - 2² = 122655215077 is a prime.

It is a super-2 number, since 2×122655215081² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (122655215021) 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 7 ways as a sum of consecutive naturals, for example, 236785871 + ... + 236786388.

It is an arithmetic number, because the mean of its divisors is an integer number (17995745880).

Almost surely, 2^122655215081 is an apocalyptic number.

It is an amenable number.

122655215081 is a deficient number, since it is larger than the sum of its proper divisors (21310751959).

122655215081 is an equidigital number, since it uses as much as digits as its factorization.

122655215081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 473572303.

The product of its (nonzero) digits is 48000, while the sum is 38.

The spelling of 122655215081 in words is "one hundred twenty-two billion, six hundred fifty-five million, two hundred fifteen thousand, eighty-one".