21412077601 has 2 divisors, whose sum is σ = 21412077602. Its totient is φ = 21412077600.

The previous prime is 21412077523. The next prime is 21412077641. The reversal of 21412077601 is 10677021412.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15578784225 + 5833293376 = 124815^2 + 76376^2 .

It is a cyclic number.

It is not a de Polignac number, because 21412077601 - 2¹⁹ = 21411553313 is a prime.

It is not a weakly prime, because it can be changed into another prime (21412077641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10706038800 + 10706038801.

It is an arithmetic number, because the mean of its divisors is an integer number (10706038801).

Almost surely, 2^21412077601 is an apocalyptic number.

It is an amenable number.

21412077601 is a deficient number, since it is larger than the sum of its proper divisors (1).

21412077601 is an equidigital number, since it uses as much as digits as its factorization.

21412077601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4704, while the sum is 31.

The spelling of 21412077601 in words is "twenty-one billion, four hundred twelve million, seventy-seven thousand, six hundred one".