20310221321149 has 2 divisors, whose sum is σ = 20310221321150. Its totient is φ = 20310221321148.

The previous prime is 20310221321101. The next prime is 20310221321189. The reversal of 20310221321149 is 94112312201302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18360427998649 + 1949793322500 = 4284907^2 + 1396350^2 .

It is a cyclic number.

It is not a de Polignac number, because 20310221321149 - 2¹⁵ = 20310221288381 is a prime.

It is a super-2 number, since 2×20310221321149² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20310221321149.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20310221321189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10155110660574 + 10155110660575.

It is an arithmetic number, because the mean of its divisors is an integer number (10155110660575).

Almost surely, 2^{20310221321149} is an apocalyptic number.

It is an amenable number.

20310221321149 is a deficient number, since it is larger than the sum of its proper divisors (1).

20310221321149 is an equidigital number, since it uses as much as digits as its factorization.

20310221321149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 31.

The spelling of 20310221321149 in words is "twenty trillion, three hundred ten billion, two hundred twenty-one million, three hundred twenty-one thousand, one hundred forty-nine".