12001222101 has 8 divisors (see below), whose sum is σ = 17456323104. Its totient is φ = 7273467920.

The previous prime is 12001222099. The next prime is 12001222117. The reversal of 12001222101 is 10122210021.

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

It is a cyclic number.

It is not a de Polignac number, because 12001222101 - 2¹ = 12001222099 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12001222001) 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, 181836666 + ... + 181836731.

It is an arithmetic number, because the mean of its divisors is an integer number (2182040388).

Almost surely, 2^12001222101 is an apocalyptic number.

12001222101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12001222101 is a deficient number, since it is larger than the sum of its proper divisors (5455101003).

12001222101 is a wasteful number, since it uses less digits than its factorization.

12001222101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363673411.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 12001222101 its reverse (10122210021), we get a palindrome (22123432122).

The spelling of 12001222101 in words is "twelve billion, one million, two hundred twenty-two thousand, one hundred one".