12201000111 has 24 divisors (see below), whose sum is σ = 18301395840. Its totient is φ = 8122873752.

The previous prime is 12201000107. The next prime is 12201000131. The reversal of 12201000111 is 11100010221.

It is a happy number.

It is not a de Polignac number, because 12201000111 - 2² = 12201000107 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 12201000093 and 12201000102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12201000131) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 145606 + ... + 213548.

It is an arithmetic number, because the mean of its divisors is an integer number (762558160).

Almost surely, 2^12201000111 is an apocalyptic number.

12201000111 is a deficient number, since it is larger than the sum of its proper divisors (6100395729).

12201000111 is an frugal number, since it uses more digits than its factorization.

12201000111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68697 (or 68685 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 12201000111 its reverse (11100010221), we get a palindrome (23301010332).

The spelling of 12201000111 in words is "twelve billion, two hundred one million, one hundred eleven", and thus it is an aban number.