122168427491 has 8 divisors (see below), whose sum is σ = 134594200368. Its totient is φ = 109962580000.

The previous prime is 122168427481. The next prime is 122168427497. The reversal of 122168427491 is 194724861221.

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 122168427491 - 2¹⁰ = 122168426467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122168427497) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54980180 + ... + 54982401.

It is an arithmetic number, because the mean of its divisors is an integer number (16824275046).

Almost surely, 2^122168427491 is an apocalyptic number.

122168427491 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

122168427491 is a deficient number, since it is larger than the sum of its proper divisors (12425772877).

122168427491 is a wasteful number, since it uses less digits than its factorization.

122168427491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109962693.

The product of its digits is 387072, while the sum is 47.

The spelling of 122168427491 in words is "one hundred twenty-two billion, one hundred sixty-eight million, four hundred twenty-seven thousand, four hundred ninety-one".