211411041997 has 2 divisors, whose sum is σ = 211411041998. Its totient is φ = 211411041996.

The previous prime is 211411041971. The next prime is 211411042009. The reversal of 211411041997 is 799140114112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 159128390281 + 52282651716 = 398909^2 + 228654^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211411041997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211411011997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105705520998 + 105705520999.

It is an arithmetic number, because the mean of its divisors is an integer number (105705520999).

Almost surely, 2^211411041997 is an apocalyptic number.

It is an amenable number.

211411041997 is a deficient number, since it is larger than the sum of its proper divisors (1).

211411041997 is an equidigital number, since it uses as much as digits as its factorization.

211411041997 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 40.

The spelling of 211411041997 in words is "two hundred eleven billion, four hundred eleven million, forty-one thousand, nine hundred ninety-seven".