12201001111 has 24 divisors (see below), whose sum is σ = 13808022480. Its totient is φ = 10713778560.

The previous prime is 12201001097. The next prime is 12201001123. The reversal of 12201001111 is 11110010221.

12201001111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12201001111 - 2⁷ = 12201000983 is a prime.

It is a super-2 number, since 2×12201001111² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12201001151) 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 23 ways as a sum of consecutive naturals, for example, 728811 + ... + 745363.

It is an arithmetic number, because the mean of its divisors is an integer number (575334270).

Almost surely, 2^12201001111 is an apocalyptic number.

12201001111 is a deficient number, since it is larger than the sum of its proper divisors (1607021369).

12201001111 is a wasteful number, since it uses less digits than its factorization.

12201001111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16687 (or 16656 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 12201001111 its reverse (11110010221), we get a palindrome (23311011332).

The spelling of 12201001111 in words is "twelve billion, two hundred one million, one thousand, one hundred eleven".