2211111100997 has 2 divisors, whose sum is σ = 2211111100998. Its totient is φ = 2211111100996.

The previous prime is 2211111100937. The next prime is 2211111101029. The reversal of 2211111100997 is 7990011111122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1399758736996 + 811352364001 = 1183114^2 + 900751^2 .

It is a cyclic number.

It is not a de Polignac number, because 2211111100997 - 2¹⁰ = 2211111099973 is a prime.

It is a super-3 number, since 3×2211111100997³ (a number of 38 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2211111100937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1105555550498 + 1105555550499.

It is an arithmetic number, because the mean of its divisors is an integer number (1105555550499).

Almost surely, 2^{2211111100997} is an apocalyptic number.

It is an amenable number.

2211111100997 is a deficient number, since it is larger than the sum of its proper divisors (1).

2211111100997 is an equidigital number, since it uses as much as digits as its factorization.

2211111100997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2268, while the sum is 35.

The spelling of 2211111100997 in words is "two trillion, two hundred eleven billion, one hundred eleven million, one hundred thousand, nine hundred ninety-seven".