22201021211197 has 2 divisors, whose sum is σ = 22201021211198. Its totient is φ = 22201021211196.

The previous prime is 22201021211189. The next prime is 22201021211219. The reversal of 22201021211197 is 79111212010222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11282034547876 + 10918986663321 = 3358874^2 + 3304389^2 .

It is a cyclic number.

It is not a de Polignac number, because 22201021211197 - 2³ = 22201021211189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22201021211297) 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, 11100510605598 + 11100510605599.

It is an arithmetic number, because the mean of its divisors is an integer number (11100510605599).

Almost surely, 2^{22201021211197} is an apocalyptic number.

It is an amenable number.

22201021211197 is a deficient number, since it is larger than the sum of its proper divisors (1).

22201021211197 is an equidigital number, since it uses as much as digits as its factorization.

22201021211197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 31.

The spelling of 22201021211197 in words is "twenty-two trillion, two hundred one billion, twenty-one million, two hundred eleven thousand, one hundred ninety-seven".