2112201022111 has 4 divisors (see below), whose sum is σ = 2112292218112. Its totient is φ = 2112109826112.

The previous prime is 2112201022051. The next prime is 2112201022117. The reversal of 2112201022111 is 1112201022112.

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 2112201022111 - 2²³ = 2112192633503 is a prime.

It is a super-2 number, since 2×2112201022111² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2112201022117) 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, 45563250 + ... + 45609583.

It is an arithmetic number, because the mean of its divisors is an integer number (528073054528).

Almost surely, 2^{2112201022111} is an apocalyptic number.

2112201022111 is a deficient number, since it is larger than the sum of its proper divisors (91196001).

2112201022111 is an equidigital number, since it uses as much as digits as its factorization.

2112201022111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91196000.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 2112201022111 its reverse (1112201022112), we get a palindrome (3224402044223).

Subtracting from 2112201022111 its reverse (1112201022112), we obtain a palindrome (999999999999).

The spelling of 2112201022111 in words is "two trillion, one hundred twelve billion, two hundred one million, twenty-two thousand, one hundred eleven".