11221011010997 has 2 divisors, whose sum is σ = 11221011010998. Its totient is φ = 11221011010996.

The previous prime is 11221011010933. The next prime is 11221011011047. The reversal of 11221011010997 is 79901011012211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9114838008241 + 2106173002756 = 3019079^2 + 1451266^2 .

It is a cyclic number.

It is not a de Polignac number, because 11221011010997 - 2⁶ = 11221011010933 is a prime.

It is a super-2 number, since 2×11221011010997² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11221011019997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5610505505498 + 5610505505499.

It is an arithmetic number, because the mean of its divisors is an integer number (5610505505499).

Almost surely, 2^{11221011010997} is an apocalyptic number.

It is an amenable number.

11221011010997 is a deficient number, since it is larger than the sum of its proper divisors (1).

11221011010997 is an equidigital number, since it uses as much as digits as its factorization.

11221011010997 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 11221011010997 in words is "eleven trillion, two hundred twenty-one billion, eleven million, ten thousand, nine hundred ninety-seven".