12201766765221 has 16 divisors (see below), whose sum is σ = 17748085621248. Its totient is φ = 7394984646000.

The previous prime is 12201766765189. The next prime is 12201766765313. The reversal of 12201766765221 is 12256766710221.

12201766765221 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 12201766765221 - 2⁵ = 12201766765189 is a prime.

It is a super-2 number, since 2×12201766765221² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12201766765121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14275896 + ... + 15106446.

It is an arithmetic number, because the mean of its divisors is an integer number (1109255351328).

Almost surely, 2^{12201766765221} is an apocalyptic number.

12201766765221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12201766765221 is a deficient number, since it is larger than the sum of its proper divisors (5546318856027).

12201766765221 is a wasteful number, since it uses less digits than its factorization.

12201766765221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1275752.

The product of its (nonzero) digits is 846720, while the sum is 48.

The spelling of 12201766765221 in words is "twelve trillion, two hundred one billion, seven hundred sixty-six million, seven hundred sixty-five thousand, two hundred twenty-one".