20021101102207 has 2 divisors, whose sum is σ = 20021101102208. Its totient is φ = 20021101102206.

The previous prime is 20021101102181. The next prime is 20021101102217. The reversal of 20021101102207 is 70220110112002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20021101102207 - 2³⁹ = 19471345288319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20021101102217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10010550551103 + 10010550551104.

It is an arithmetic number, because the mean of its divisors is an integer number (10010550551104).

Almost surely, 2^{20021101102207} is an apocalyptic number.

20021101102207 is a deficient number, since it is larger than the sum of its proper divisors (1).

20021101102207 is an equidigital number, since it uses as much as digits as its factorization.

20021101102207 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112, while the sum is 19.

Adding to 20021101102207 its reverse (70220110112002), we get a palindrome (90241211214209).

The spelling of 20021101102207 in words is "twenty trillion, twenty-one billion, one hundred one million, one hundred two thousand, two hundred seven".