2101222002197 has 2 divisors, whose sum is σ = 2101222002198. Its totient is φ = 2101222002196.

The previous prime is 2101222002079. The next prime is 2101222002223. The reversal of 2101222002197 is 7912002221012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1596505533841 + 504716468356 = 1263529^2 + 710434^2 .

It is a cyclic number.

It is not a de Polignac number, because 2101222002197 - 2⁸ = 2101222001941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2101222002497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050611001098 + 1050611001099.

It is an arithmetic number, because the mean of its divisors is an integer number (1050611001099).

Almost surely, 2^{2101222002197} is an apocalyptic number.

It is an amenable number.

2101222002197 is a deficient number, since it is larger than the sum of its proper divisors (1).

2101222002197 is an equidigital number, since it uses as much as digits as its factorization.

2101222002197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 29.

The spelling of 2101222002197 in words is "two trillion, one hundred one billion, two hundred twenty-two million, two thousand, one hundred ninety-seven".