2122112111 has 16 divisors (see below), whose sum is σ = 2454511680. Its totient is φ = 1797100800.

The previous prime is 2122112107. The next prime is 2122112119. The reversal of 2122112111 is 1112112212.

It is a cyclic number.

It is not a de Polignac number, because 2122112111 - 2² = 2122112107 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 (2122112119) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 356915 + ... + 362811.

It is an arithmetic number, because the mean of its divisors is an integer number (153406980).

Almost surely, 2^2122112111 is an apocalyptic number.

2122112111 is a deficient number, since it is larger than the sum of its proper divisors (332399569).

2122112111 is a wasteful number, since it uses less digits than its factorization.

2122112111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6514.

The product of its digits is 16, while the sum is 14.

The square root of 2122112111 is about 46066.3880828528. The cubic root of 2122112111 is about 1285.0581331985.

Adding to 2122112111 its reverse (1112112212), we get a palindrome (3234224323).

The spelling of 2122112111 in words is "two billion, one hundred twenty-two million, one hundred twelve thousand, one hundred eleven".