2112120103111 has 4 divisors (see below), whose sum is σ = 2112162914032. Its totient is φ = 2112077292192.

The previous prime is 2112120103109. The next prime is 2112120103123. The reversal of 2112120103111 is 1113010212112.

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 2112120103111 - 2¹ = 2112120103109 is a prime.

It is a super-2 number, since 2×2112120103111² (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 (2112120103151) 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, 21331371 + ... + 21430156.

It is an arithmetic number, because the mean of its divisors is an integer number (528040728508).

Almost surely, 2^{2112120103111} is an apocalyptic number.

2112120103111 is a deficient number, since it is larger than the sum of its proper divisors (42810921).

2112120103111 is an equidigital number, since it uses as much as digits as its factorization.

2112120103111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42810920.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 2112120103111 its reverse (1113010212112), we get a palindrome (3225130315223).

The spelling of 2112120103111 in words is "two trillion, one hundred twelve billion, one hundred twenty million, one hundred three thousand, one hundred eleven".