2122221112111 has 4 divisors (see below), whose sum is σ = 2122232400000. Its totient is φ = 2122209824224.

The previous prime is 2122221112103. The next prime is 2122221112127. The reversal of 2122221112111 is 1112111222212.

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 2122221112111 - 2³ = 2122221112103 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 (2122281112111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5357071 + ... + 5739568.

It is an arithmetic number, because the mean of its divisors is an integer number (530558100000).

Almost surely, 2^{2122221112111} is an apocalyptic number.

2122221112111 is a deficient number, since it is larger than the sum of its proper divisors (11287889).

2122221112111 is a wasteful number, since it uses less digits than its factorization.

2122221112111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11287888.

The product of its digits is 64, while the sum is 19.

Adding to 2122221112111 its reverse (1112111222212), we get a palindrome (3234332334323).

The spelling of 2122221112111 in words is "two trillion, one hundred twenty-two billion, two hundred twenty-one million, one hundred twelve thousand, one hundred eleven".