211111022021297 has 2 divisors, whose sum is σ = 211111022021298. Its totient is φ = 211111022021296.

The previous prime is 211111022021281. The next prime is 211111022021321. The reversal of 211111022021297 is 792120220111112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 147497891606641 + 63613130414656 = 12144871^2 + 7975784^2 .

It is a cyclic number.

It is not a de Polignac number, because 211111022021297 - 2⁴ = 211111022021281 is a prime.

It is not a weakly prime, because it can be changed into another prime (211111022021267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105555511010648 + 105555511010649.

It is an arithmetic number, because the mean of its divisors is an integer number (105555511010649).

Almost surely, 2^{211111022021297} is an apocalyptic number.

It is an amenable number.

211111022021297 is a deficient number, since it is larger than the sum of its proper divisors (1).

211111022021297 is an equidigital number, since it uses as much as digits as its factorization.

211111022021297 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 32.

The spelling of 211111022021297 in words is "two hundred eleven trillion, one hundred eleven billion, twenty-two million, twenty-one thousand, two hundred ninety-seven".