21023020202207 has 2 divisors, whose sum is σ = 21023020202208. Its totient is φ = 21023020202206.

The previous prime is 21023020202203. The next prime is 21023020202333. The reversal of 21023020202207 is 70220202032012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21023020202207 - 2² = 21023020202203 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21023020202203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10511510101103 + 10511510101104.

It is an arithmetic number, because the mean of its divisors is an integer number (10511510101104).

Almost surely, 2^{21023020202207} is an apocalyptic number.

21023020202207 is a deficient number, since it is larger than the sum of its proper divisors (1).

21023020202207 is an equidigital number, since it uses as much as digits as its factorization.

21023020202207 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1344, while the sum is 23.

Adding to 21023020202207 its reverse (70220202032012), we get a palindrome (91243222234219).

The spelling of 21023020202207 in words is "twenty-one trillion, twenty-three billion, twenty million, two hundred two thousand, two hundred seven".