2122145111 has 4 divisors (see below), whose sum is σ = 2138344824. Its totient is φ = 2105945400.

The previous prime is 2122145107. The next prime is 2122145141. The reversal of 2122145111 is 1115412212.

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 2122145111 - 2² = 2122145107 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 (2122145141) 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, 8099660 + ... + 8099921.

It is an arithmetic number, because the mean of its divisors is an integer number (534586206).

Almost surely, 2^2122145111 is an apocalyptic number.

2122145111 is a deficient number, since it is larger than the sum of its proper divisors (16199713).

2122145111 is a wasteful number, since it uses less digits than its factorization.

2122145111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16199712.

The product of its digits is 160, while the sum is 20.

The square root of 2122145111 is about 46066.7462601821. The cubic root of 2122145111 is about 1285.0647942821.

Adding to 2122145111 its reverse (1115412212), we get a palindrome (3237557323).

The spelling of 2122145111 in words is "two billion, one hundred twenty-two million, one hundred forty-five thousand, one hundred eleven".