211222220199997 has 2 divisors, whose sum is σ = 211222220199998. Its totient is φ = 211222220199996.

The previous prime is 211222220199953. The next prime is 211222220200037. The reversal of 211222220199997 is 799991022222112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 184635347387481 + 26586872812516 = 13588059^2 + 5156246^2 .

It is a cyclic number.

It is not a de Polignac number, because 211222220199997 - 2¹¹ = 211222220197949 is a prime.

It is a super-2 number, since 2×211222220199997² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211222220119997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105611110099998 + 105611110099999.

It is an arithmetic number, because the mean of its divisors is an integer number (105611110099999).

Almost surely, 2^{211222220199997} is an apocalyptic number.

It is an amenable number.

211222220199997 is a deficient number, since it is larger than the sum of its proper divisors (1).

211222220199997 is an equidigital number, since it uses as much as digits as its factorization.

211222220199997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2939328, while the sum is 58.

The spelling of 211222220199997 in words is "two hundred eleven trillion, two hundred twenty-two billion, two hundred twenty million, one hundred ninety-nine thousand, nine hundred ninety-seven".