21202203301373 has 2 divisors, whose sum is σ = 21202203301374. Its totient is φ = 21202203301372.

The previous prime is 21202203301231. The next prime is 21202203301387. The reversal of 21202203301373 is 37310330220212.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20803432522084 + 398770779289 = 4561078^2 + 631483^2 .

It is a cyclic number.

It is not a de Polignac number, because 21202203301373 - 2¹⁸ = 21202203039229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21202283301373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10601101650686 + 10601101650687.

It is an arithmetic number, because the mean of its divisors is an integer number (10601101650687).

Almost surely, 2^{21202203301373} is an apocalyptic number.

It is an amenable number.

21202203301373 is a deficient number, since it is larger than the sum of its proper divisors (1).

21202203301373 is an equidigital number, since it uses as much as digits as its factorization.

21202203301373 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 29.

Adding to 21202203301373 its reverse (37310330220212), we get a palindrome (58512533521585).

The spelling of 21202203301373 in words is "twenty-one trillion, two hundred two billion, two hundred three million, three hundred one thousand, three hundred seventy-three".