20120233111 has 8 divisors (see below), whose sum is σ = 22060765584. Its totient is φ = 18198270720.

The previous prime is 20120233097. The next prime is 20120233121. The reversal of 20120233111 is 11133202102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20120233111 - 2¹⁷ = 20120102039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20120233121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4640250 + ... + 4644583.

It is an arithmetic number, because the mean of its divisors is an integer number (2757595698).

Almost surely, 2^20120233111 is an apocalyptic number.

20120233111 is a deficient number, since it is larger than the sum of its proper divisors (1940532473).

20120233111 is a wasteful number, since it uses less digits than its factorization.

20120233111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9285041.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 20120233111 its reverse (11133202102), we get a palindrome (31253435213).

The spelling of 20120233111 in words is "twenty billion, one hundred twenty million, two hundred thirty-three thousand, one hundred eleven".