1121715571 has 2 divisors, whose sum is σ = 1121715572. Its totient is φ = 1121715570.

The previous prime is 1121715547. The next prime is 1121715593. The reversal of 1121715571 is 1755171211.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1121715571 - 2⁷ = 1121715443 is a prime.

It is not a weakly prime, because it can be changed into another prime (1121715271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560857785 + 560857786.

It is an arithmetic number, because the mean of its divisors is an integer number (560857786).

Almost surely, 2^1121715571 is an apocalyptic number.

1121715571 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121715571 is an equidigital number, since it uses as much as digits as its factorization.

1121715571 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2450, while the sum is 31.

The square root of 1121715571 is about 33492.0224979024. The cubic root of 1121715571 is about 1039.0287934543.

Adding to 1121715571 its reverse (1755171211), we get a palindrome (2876886782).

The spelling of 1121715571 in words is "one billion, one hundred twenty-one million, seven hundred fifteen thousand, five hundred seventy-one".