11223020971 has 2 divisors, whose sum is σ = 11223020972. Its totient is φ = 11223020970.

The previous prime is 11223020969. The next prime is 11223021037. The reversal of 11223020971 is 17902032211.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11223020971 - 2¹ = 11223020969 is a prime.

Together with 11223020969, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (11223020911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5611510485 + 5611510486.

It is an arithmetic number, because the mean of its divisors is an integer number (5611510486).

Almost surely, 2^11223020971 is an apocalyptic number.

11223020971 is a deficient number, since it is larger than the sum of its proper divisors (1).

11223020971 is an equidigital number, since it uses as much as digits as its factorization.

11223020971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 28.

The spelling of 11223020971 in words is "eleven billion, two hundred twenty-three million, twenty thousand, nine hundred seventy-one".