12101232111 has 32 divisors (see below), whose sum is σ = 17415129600. Its totient is φ = 7446420480.

The previous prime is 12101232083. The next prime is 12101232131. The reversal of 12101232111 is 11123210121.

It is not a de Polignac number, because 12101232111 - 2¹³ = 12101223919 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12101232131) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1316371 + ... + 1325531.

It is an arithmetic number, because the mean of its divisors is an integer number (544222800).

Almost surely, 2^12101232111 is an apocalyptic number.

12101232111 is a deficient number, since it is larger than the sum of its proper divisors (5313897489).

12101232111 is a wasteful number, since it uses less digits than its factorization.

12101232111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9679.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 12101232111 its reverse (11123210121), we get a palindrome (23224442232).

It can be divided in two parts, 1210 and 1232111, that added together give a palindrome (1233321).

The spelling of 12101232111 in words is "twelve billion, one hundred one million, two hundred thirty-two thousand, one hundred eleven".