12201010020221 has 4 divisors (see below), whose sum is σ = 13310192749344. Its totient is φ = 11091827291100.

The previous prime is 12201010020217. The next prime is 12201010020281. The reversal of 12201010020221 is 12202001010221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12201010020221 - 2² = 12201010020217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12201010020196 and 12201010020205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12201010020281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 554591364545 + ... + 554591364566.

It is an arithmetic number, because the mean of its divisors is an integer number (3327548187336).

Almost surely, 2^{12201010020221} is an apocalyptic number.

12201010020221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12201010020221 is a deficient number, since it is larger than the sum of its proper divisors (1109182729123).

12201010020221 is a wasteful number, since it uses less digits than its factorization.

12201010020221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1109182729122.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 12201010020221 its reverse (12202001010221), we get a palindrome (24403011030442).

The spelling of 12201010020221 in words is "twelve trillion, two hundred one billion, ten million, twenty thousand, two hundred twenty-one".