215136011 has 2 divisors, whose sum is σ = 215136012. Its totient is φ = 215136010.

The previous prime is 215135981. The next prime is 215136023. The reversal of 215136011 is 110631512.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 215136011 - 2¹⁰ = 215134987 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (215136041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107568005 + 107568006.

It is an arithmetic number, because the mean of its divisors is an integer number (107568006).

Almost surely, 2^215136011 is an apocalyptic number.

215136011 is a deficient number, since it is larger than the sum of its proper divisors (1).

215136011 is an equidigital number, since it uses as much as digits as its factorization.

215136011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 215136011 is about 14667.5155019519. The cubic root of 215136011 is about 599.1989411691.

Adding to 215136011 its reverse (110631512), we get a palindrome (325767523).

The spelling of 215136011 in words is "two hundred fifteen million, one hundred thirty-six thousand, eleven".