2120432111 has 16 divisors (see below), whose sum is σ = 2468164608. Its totient is φ = 1784126400.

The previous prime is 2120432107. The next prime is 2120432113. The reversal of 2120432111 is 1112340212.

It is not a de Polignac number, because 2120432111 - 2² = 2120432107 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2120432111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120432113) 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, 106646 + ... + 124956.

It is an arithmetic number, because the mean of its divisors is an integer number (154260288).

Almost surely, 2^2120432111 is an apocalyptic number.

2120432111 is a deficient number, since it is larger than the sum of its proper divisors (347732497).

2120432111 is a wasteful number, since it uses less digits than its factorization.

2120432111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18622.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 2120432111 is about 46048.1499194050. The cubic root of 2120432111 is about 1284.7189322030.

Adding to 2120432111 its reverse (1112340212), we get a palindrome (3232772323).

The spelling of 2120432111 in words is "two billion, one hundred twenty million, four hundred thirty-two thousand, one hundred eleven".