122120111999 has 8 divisors (see below), whose sum is σ = 122215661568. Its totient is φ = 122024598520.

The previous prime is 122120111987. The next prime is 122120112007. The reversal of 122120111999 is 999111021221.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122120111999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122120114999) 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, 14452994 + ... + 14461440.

It is an arithmetic number, because the mean of its divisors is an integer number (15276957696).

Almost surely, 2^122120111999 is an apocalyptic number.

122120111999 is a deficient number, since it is larger than the sum of its proper divisors (95549569).

122120111999 is an equidigital number, since it uses as much as digits as its factorization.

122120111999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18045.

The product of its (nonzero) digits is 5832, while the sum is 38.

The spelling of 122120111999 in words is "one hundred twenty-two billion, one hundred twenty million, one hundred eleven thousand, nine hundred ninety-nine".