11321222010997 has 4 divisors (see below), whose sum is σ = 11987176246956. Its totient is φ = 10655267775040.

The previous prime is 11321222010941. The next prime is 11321222011037. The reversal of 11321222010997 is 79901022212311.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9144340129521 + 2176881881476 = 3023961^2 + 1475426^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11321222010997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11321222010097) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 332977117954 + ... + 332977117987.

It is an arithmetic number, because the mean of its divisors is an integer number (2996794061739).

Almost surely, 2^{11321222010997} is an apocalyptic number.

11321222010997 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

11321222010997 is a deficient number, since it is larger than the sum of its proper divisors (665954235959).

11321222010997 is an equidigital number, since it uses as much as digits as its factorization.

11321222010997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 665954235958.

The product of its (nonzero) digits is 27216, while the sum is 40.

The spelling of 11321222010997 in words is "eleven trillion, three hundred twenty-one billion, two hundred twenty-two million, ten thousand, nine hundred ninety-seven".