21202022112191 has 2 divisors, whose sum is σ = 21202022112192. Its totient is φ = 21202022112190.

The previous prime is 21202022112113. The next prime is 21202022112241. The reversal of 21202022112191 is 19121122020212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21202022112191 - 2⁴² = 16803975601087 is a prime.

It is a super-2 number, since 2×21202022112191² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21202022112191.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21202022112091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10601011056095 + 10601011056096.

It is an arithmetic number, because the mean of its divisors is an integer number (10601011056096).

Almost surely, 2^{21202022112191} is an apocalyptic number.

21202022112191 is a deficient number, since it is larger than the sum of its proper divisors (1).

21202022112191 is an equidigital number, since it uses as much as digits as its factorization.

21202022112191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 26.

The spelling of 21202022112191 in words is "twenty-one trillion, two hundred two billion, twenty-two million, one hundred twelve thousand, one hundred ninety-one".