215244156011 has 2 divisors, whose sum is σ = 215244156012. Its totient is φ = 215244156010.

The previous prime is 215244155993. The next prime is 215244156047. The reversal of 215244156011 is 110651442512.

It is a happy number.

215244156011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 215244156011 - 2¹⁰ = 215244154987 is a prime.

It is not a weakly prime, because it can be changed into another prime (215244158011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107622078005 + 107622078006.

It is an arithmetic number, because the mean of its divisors is an integer number (107622078006).

Almost surely, 2^215244156011 is an apocalyptic number.

215244156011 is a deficient number, since it is larger than the sum of its proper divisors (1).

215244156011 is an equidigital number, since it uses as much as digits as its factorization.

215244156011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9600, while the sum is 32.

Adding to 215244156011 its reverse (110651442512), we get a palindrome (325895598523).

The spelling of 215244156011 in words is "two hundred fifteen billion, two hundred forty-four million, one hundred fifty-six thousand, eleven".