2122001112111 has 4 divisors (see below), whose sum is σ = 2829334816152. Its totient is φ = 1414667408072.

The previous prime is 2122001112107. The next prime is 2122001112193. The reversal of 2122001112111 is 1112111002212.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2122001112111 - 2² = 2122001112107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2122003112111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 353666852016 + ... + 353666852021.

It is an arithmetic number, because the mean of its divisors is an integer number (707333704038).

Almost surely, 2^{2122001112111} is an apocalyptic number.

2122001112111 is a deficient number, since it is larger than the sum of its proper divisors (707333704041).

2122001112111 is an equidigital number, since it uses as much as digits as its factorization.

2122001112111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 707333704040.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 2122001112111 its reverse (1112111002212), we get a palindrome (3234112114323).

The spelling of 2122001112111 in words is "two trillion, one hundred twenty-two billion, one million, one hundred twelve thousand, one hundred eleven".