1172571011 has 2 divisors, whose sum is σ = 1172571012. Its totient is φ = 1172571010.

The previous prime is 1172570977. The next prime is 1172571019. The reversal of 1172571011 is 1101752711.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1172571011 - 2⁶ = 1172570947 is a prime.

It is not a weakly prime, because it can be changed into another prime (1172571019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 586285505 + 586285506.

It is an arithmetic number, because the mean of its divisors is an integer number (586285506).

Almost surely, 2^1172571011 is an apocalyptic number.

1172571011 is a deficient number, since it is larger than the sum of its proper divisors (1).

1172571011 is an equidigital number, since it uses as much as digits as its factorization.

1172571011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 490, while the sum is 26.

The square root of 1172571011 is about 34242.8242263981. The cubic root of 1172571011 is about 1054.4995150872.

The spelling of 1172571011 in words is "one billion, one hundred seventy-two million, five hundred seventy-one thousand, eleven".