21102210002273 has 2 divisors, whose sum is σ = 21102210002274. Its totient is φ = 21102210002272.

The previous prime is 21102210002233. The next prime is 21102210002369. The reversal of 21102210002273 is 37220001220112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20720276114209 + 381933888064 = 4551953^2 + 618008^2 .

It is a cyclic number.

It is not a de Polignac number, because 21102210002273 - 2⁸ = 21102210002017 is a prime.

It is not a weakly prime, because it can be changed into another prime (21102210002233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10551105001136 + 10551105001137.

It is an arithmetic number, because the mean of its divisors is an integer number (10551105001137).

Almost surely, 2^{21102210002273} is an apocalyptic number.

It is an amenable number.

21102210002273 is a deficient number, since it is larger than the sum of its proper divisors (1).

21102210002273 is an equidigital number, since it uses as much as digits as its factorization.

21102210002273 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 23.

Adding to 21102210002273 its reverse (37220001220112), we get a palindrome (58322211222385).

The spelling of 21102210002273 in words is "twenty-one trillion, one hundred two billion, two hundred ten million, two thousand, two hundred seventy-three".