12113211021 has 8 divisors (see below), whose sum is σ = 16160136960. Its totient is φ = 8070879552.

The previous prime is 12113210987. The next prime is 12113211029. The reversal of 12113211021 is 12011231121.

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

It is not a de Polignac number, because 12113211021 - 2²³ = 12104822413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12113211029) 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, 1142460 + ... + 1153013.

It is an arithmetic number, because the mean of its divisors is an integer number (2020017120).

Almost surely, 2^12113211021 is an apocalyptic number.

It is an amenable number.

12113211021 is a deficient number, since it is larger than the sum of its proper divisors (4046925939).

12113211021 is a wasteful number, since it uses less digits than its factorization.

12113211021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2297235.

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

Adding to 12113211021 its reverse (12011231121), we get a palindrome (24124442142).

The spelling of 12113211021 in words is "twelve billion, one hundred thirteen million, two hundred eleven thousand, twenty-one".