21012302230273 has 2 divisors, whose sum is σ = 21012302230274. Its totient is φ = 21012302230272.

The previous prime is 21012302230223. The next prime is 21012302230289. The reversal of 21012302230273 is 37203220321012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20178126888049 + 834175342224 = 4492007^2 + 913332^2 .

It is a cyclic number.

It is not a de Polignac number, because 21012302230273 - 2³³ = 21003712295681 is a prime.

It is not a weakly prime, because it can be changed into another prime (21012302230223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10506151115136 + 10506151115137.

It is an arithmetic number, because the mean of its divisors is an integer number (10506151115137).

Almost surely, 2^{21012302230273} is an apocalyptic number.

It is an amenable number.

21012302230273 is a deficient number, since it is larger than the sum of its proper divisors (1).

21012302230273 is an equidigital number, since it uses as much as digits as its factorization.

21012302230273 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 28.

Adding to 21012302230273 its reverse (37203220321012), we get a palindrome (58215522551285).

The spelling of 21012302230273 in words is "twenty-one trillion, twelve billion, three hundred two million, two hundred thirty thousand, two hundred seventy-three".