21320113323701 has 2 divisors, whose sum is σ = 21320113323702. Its totient is φ = 21320113323700.

The previous prime is 21320113323673. The next prime is 21320113323727. The reversal of 21320113323701 is 10732331102312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20483309170801 + 836804152900 = 4525849^2 + 914770^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21320113323701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21320113023701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10660056661850 + 10660056661851.

It is an arithmetic number, because the mean of its divisors is an integer number (10660056661851).

Almost surely, 2^{21320113323701} is an apocalyptic number.

It is an amenable number.

21320113323701 is a deficient number, since it is larger than the sum of its proper divisors (1).

21320113323701 is an equidigital number, since it uses as much as digits as its factorization.

21320113323701 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 29.

The spelling of 21320113323701 in words is "twenty-one trillion, three hundred twenty billion, one hundred thirteen million, three hundred twenty-three thousand, seven hundred one".