1180020011 has 2 divisors, whose sum is σ = 1180020012. Its totient is φ = 1180020010.

The previous prime is 1180019999. The next prime is 1180020073. The reversal of 1180020011 is 1100200811.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1180020011 - 2¹⁸ = 1179757867 is a prime.

It is not a weakly prime, because it can be changed into another prime (1180020091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 590010005 + 590010006.

It is an arithmetic number, because the mean of its divisors is an integer number (590010006).

Almost surely, 2^1180020011 is an apocalyptic number.

1180020011 is a deficient number, since it is larger than the sum of its proper divisors (1).

1180020011 is an equidigital number, since it uses as much as digits as its factorization.

1180020011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 14.

The square root of 1180020011 is about 34351.4193447665. The cubic root of 1180020011 is about 1056.7277786882.

Adding to 1180020011 its reverse (1100200811), we get a palindrome (2280220822).

The spelling of 1180020011 in words is "one billion, one hundred eighty million, twenty thousand, eleven".