122001211111 has 8 divisors (see below), whose sum is σ = 131534726960. Its totient is φ = 112488953472.

The previous prime is 122001211099. The next prime is 122001211153. The reversal of 122001211111 is 111112100221.

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 122001211111 - 2³³ = 113411276519 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 122001211091 and 122001211100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122001211181) 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, 5302626 + ... + 5325583.

It is an arithmetic number, because the mean of its divisors is an integer number (16441840870).

Almost surely, 2^122001211111 is an apocalyptic number.

122001211111 is a deficient number, since it is larger than the sum of its proper divisors (9533515849).

122001211111 is a wasteful number, since it uses less digits than its factorization.

122001211111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10629105.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 122001211111 its reverse (111112100221), we get a palindrome (233113311332).

The spelling of 122001211111 in words is "one hundred twenty-two billion, one million, two hundred eleven thousand, one hundred eleven".