1112221110997 has 2 divisors, whose sum is σ = 1112221110998. Its totient is φ = 1112221110996.

The previous prime is 1112221110901. The next prime is 1112221111003. The reversal of 1112221110997 is 7990111222111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 996191632836 + 116029478161 = 998094^2 + 340631^2 .

It is an emirp because it is prime and its reverse (7990111222111) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1112221110997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1112221110397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 556110555498 + 556110555499.

It is an arithmetic number, because the mean of its divisors is an integer number (556110555499).

Almost surely, 2^{1112221110997} is an apocalyptic number.

It is an amenable number.

1112221110997 is a deficient number, since it is larger than the sum of its proper divisors (1).

1112221110997 is an equidigital number, since it uses as much as digits as its factorization.

1112221110997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 37.

The spelling of 1112221110997 in words is "one trillion, one hundred twelve billion, two hundred twenty-one million, one hundred ten thousand, nine hundred ninety-seven".