122861227809 has 8 divisors (see below), whose sum is σ = 172436811040. Its totient is φ = 77596564896.

The previous prime is 122861227789. The next prime is 122861227813. The reversal of 122861227809 is 908722168221.

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

It is not a de Polignac number, because 122861227809 - 2⁵ = 122861227777 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (122861227849) 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, 1077730012 + ... + 1077730125.

It is an arithmetic number, because the mean of its divisors is an integer number (21554601380).

Almost surely, 2^122861227809 is an apocalyptic number.

122861227809 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

122861227809 is a deficient number, since it is larger than the sum of its proper divisors (49575583231).

122861227809 is a wasteful number, since it uses less digits than its factorization.

122861227809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2155460159.

The product of its (nonzero) digits is 387072, while the sum is 48.

The spelling of 122861227809 in words is "one hundred twenty-two billion, eight hundred sixty-one million, two hundred twenty-seven thousand, eight hundred nine".