10221323219977 has 2 divisors, whose sum is σ = 10221323219978. Its totient is φ = 10221323219976.

The previous prime is 10221323219951. The next prime is 10221323220041. The reversal of 10221323219977 is 77991232312201.

10221323219977 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7937201828416 + 2284121391561 = 2817304^2 + 1511331^2 .

It is a cyclic number.

It is not a de Polignac number, because 10221323219977 - 2³⁹ = 9671567406089 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10221323219977.

It is not a weakly prime, because it can be changed into another prime (10221323219917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5110661609988 + 5110661609989.

It is an arithmetic number, because the mean of its divisors is an integer number (5110661609989).

Almost surely, 2^{10221323219977} is an apocalyptic number.

It is an amenable number.

10221323219977 is a deficient number, since it is larger than the sum of its proper divisors (1).

10221323219977 is an equidigital number, since it uses as much as digits as its factorization.

10221323219977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 571536, while the sum is 49.

The spelling of 10221323219977 in words is "ten trillion, two hundred twenty-one billion, three hundred twenty-three million, two hundred nineteen thousand, nine hundred seventy-seven".