21201022102207 has 2 divisors, whose sum is σ = 21201022102208. Its totient is φ = 21201022102206.

The previous prime is 21201022102153. The next prime is 21201022102243. The reversal of 21201022102207 is 70220122010212.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21201022102207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21201022109207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10600511051103 + 10600511051104.

It is an arithmetic number, because the mean of its divisors is an integer number (10600511051104).

Almost surely, 2^{21201022102207} is an apocalyptic number.

21201022102207 is a deficient number, since it is larger than the sum of its proper divisors (1).

21201022102207 is an equidigital number, since it uses as much as digits as its factorization.

21201022102207 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 448, while the sum is 22.

Adding to 21201022102207 its reverse (70220122010212), we get a palindrome (91421144112419).

The spelling of 21201022102207 in words is "twenty-one trillion, two hundred one billion, twenty-two million, one hundred two thousand, two hundred seven".