2212020211997 has 2 divisors, whose sum is σ = 2212020211998. Its totient is φ = 2212020211996.

The previous prime is 2212020211987. The next prime is 2212020212023. The reversal of 2212020211997 is 7991120202122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1136912520121 + 1075107691876 = 1066261^2 + 1036874^2 .

It is a cyclic number.

It is not a de Polignac number, because 2212020211997 - 2⁴ = 2212020211981 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2212020211997.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2212020211927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1106010105998 + 1106010105999.

It is an arithmetic number, because the mean of its divisors is an integer number (1106010105999).

Almost surely, 2^{2212020211997} is an apocalyptic number.

It is an amenable number.

2212020211997 is a deficient number, since it is larger than the sum of its proper divisors (1).

2212020211997 is an equidigital number, since it uses as much as digits as its factorization.

2212020211997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 38.

The spelling of 2212020211997 in words is "two trillion, two hundred twelve billion, twenty million, two hundred eleven thousand, nine hundred ninety-seven".