12201721151 has 16 divisors (see below), whose sum is σ = 13270397184. Its totient is φ = 11174077824.

The previous prime is 12201721141. The next prime is 12201721157. The reversal of 12201721151 is 15112710221.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12201721151 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12201721157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 160520 + ... + 223986.

It is an arithmetic number, because the mean of its divisors is an integer number (829399824).

Almost surely, 2^12201721151 is an apocalyptic number.

12201721151 is a deficient number, since it is larger than the sum of its proper divisors (1068676033).

12201721151 is a wasteful number, since it uses less digits than its factorization.

12201721151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63790.

The product of its (nonzero) digits is 280, while the sum is 23.

The spelling of 12201721151 in words is "twelve billion, two hundred one million, seven hundred twenty-one thousand, one hundred fifty-one".