12121032111 has 8 divisors (see below), whose sum is σ = 16164228864. Its totient is φ = 8079261720.

The previous prime is 12121032103. The next prime is 12121032151. The reversal of 12121032111 is 11123012121.

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

It is not a de Polignac number, because 12121032111 - 2³ = 12121032103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12121032151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 336601 + ... + 370866.

It is an arithmetic number, because the mean of its divisors is an integer number (2020528608).

Almost surely, 2^12121032111 is an apocalyptic number.

12121032111 is a deficient number, since it is larger than the sum of its proper divisors (4043196753).

12121032111 is an equidigital number, since it uses as much as digits as its factorization.

12121032111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 713181.

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

Adding to 12121032111 its reverse (11123012121), we get a palindrome (23244044232).

The spelling of 12121032111 in words is "twelve billion, one hundred twenty-one million, thirty-two thousand, one hundred eleven".