11321421189971 has 2 divisors, whose sum is σ = 11321421189972. Its totient is φ = 11321421189970.

The previous prime is 11321421189961. The next prime is 11321421189977. The reversal of 11321421189971 is 17998112412311.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11321421189971 is a prime.

It is not a weakly prime, because it can be changed into another prime (11321421189977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5660710594985 + 5660710594986.

It is an arithmetic number, because the mean of its divisors is an integer number (5660710594986).

Almost surely, 2^{11321421189971} is an apocalyptic number.

11321421189971 is a deficient number, since it is larger than the sum of its proper divisors (1).

11321421189971 is an equidigital number, since it uses as much as digits as its factorization.

11321421189971 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 50.

The spelling of 11321421189971 in words is "eleven trillion, three hundred twenty-one billion, four hundred twenty-one million, one hundred eighty-nine thousand, nine hundred seventy-one".