11122221010997 has 2 divisors, whose sum is σ = 11122221010998. Its totient is φ = 11122221010996.

The previous prime is 11122221010973. The next prime is 11122221011023. The reversal of 11122221010997 is 79901012222111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6473772898321 + 4648448112676 = 2544361^2 + 2156026^2 .

It is a cyclic number.

It is not a de Polignac number, because 11122221010997 - 2¹⁴ = 11122220994613 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11122221010997.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11122221019997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5561110505498 + 5561110505499.

It is an arithmetic number, because the mean of its divisors is an integer number (5561110505499).

Almost surely, 2^{11122221010997} is an apocalyptic number.

It is an amenable number.

11122221010997 is a deficient number, since it is larger than the sum of its proper divisors (1).

11122221010997 is an equidigital number, since it uses as much as digits as its factorization.

11122221010997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 38.

The spelling of 11122221010997 in words is "eleven trillion, one hundred twenty-two billion, two hundred twenty-one million, ten thousand, nine hundred ninety-seven".