211111213147 has 2 divisors, whose sum is σ = 211111213148. Its totient is φ = 211111213146.

The previous prime is 211111213127. The next prime is 211111213217. The reversal of 211111213147 is 741312111112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 211111213147 - 2²⁷ = 210976995419 is a prime.

It is not a weakly prime, because it can be changed into another prime (211111213127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105555606573 + 105555606574.

It is an arithmetic number, because the mean of its divisors is an integer number (105555606574).

Almost surely, 2^211111213147 is an apocalyptic number.

211111213147 is a deficient number, since it is larger than the sum of its proper divisors (1).

211111213147 is an equidigital number, since it uses as much as digits as its factorization.

211111213147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 336, while the sum is 25.

Adding to 211111213147 its reverse (741312111112), we get a palindrome (952423324259).

The spelling of 211111213147 in words is "two hundred eleven billion, one hundred eleven million, two hundred thirteen thousand, one hundred forty-seven".