12204068621 has 2 divisors, whose sum is σ = 12204068622. Its totient is φ = 12204068620.

The previous prime is 12204068573. The next prime is 12204068629. The reversal of 12204068621 is 12686040221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6110548900 + 6093519721 = 78170^2 + 78061^2 .

It is a cyclic number.

It is not a de Polignac number, because 12204068621 - 2⁶ = 12204068557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12204068629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6102034310 + 6102034311.

It is an arithmetic number, because the mean of its divisors is an integer number (6102034311).

Almost surely, 2^12204068621 is an apocalyptic number.

It is an amenable number.

12204068621 is a deficient number, since it is larger than the sum of its proper divisors (1).

12204068621 is an equidigital number, since it uses as much as digits as its factorization.

12204068621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9216, while the sum is 32.

The spelling of 12204068621 in words is "twelve billion, two hundred four million, sixty-eight thousand, six hundred twenty-one".