321421101099949 has 2 divisors, whose sum is σ = 321421101099950. Its totient is φ = 321421101099948.

The previous prime is 321421101099893. The next prime is 321421101100049. The reversal of 321421101099949 is 949990101124123.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 197806841041924 + 123614260058025 = 14064382^2 + 11118195^2 .

It is a cyclic number.

It is not a de Polignac number, because 321421101099949 - 2⁹ = 321421101099437 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 321421101099949.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321421101099149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160710550549974 + 160710550549975.

It is an arithmetic number, because the mean of its divisors is an integer number (160710550549975).

Almost surely, 2^{321421101099949} is an apocalyptic number.

It is an amenable number.

321421101099949 is a deficient number, since it is larger than the sum of its proper divisors (1).

321421101099949 is an equidigital number, since it uses as much as digits as its factorization.

321421101099949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1259712, while the sum is 55.

The spelling of 321421101099949 in words is "three hundred twenty-one trillion, four hundred twenty-one billion, one hundred one million, ninety-nine thousand, nine hundred forty-nine".