211121012147 has 2 divisors, whose sum is σ = 211121012148. Its totient is φ = 211121012146.

The previous prime is 211121012111. The next prime is 211121012273. The reversal of 211121012147 is 741210121112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 211121012147 - 2²⁸ = 210852576691 is a prime.

It is not a weakly prime, because it can be changed into another prime (211121012447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105560506073 + 105560506074.

It is an arithmetic number, because the mean of its divisors is an integer number (105560506074).

Almost surely, 2^211121012147 is an apocalyptic number.

211121012147 is a deficient number, since it is larger than the sum of its proper divisors (1).

211121012147 is an equidigital number, since it uses as much as digits as its factorization.

211121012147 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 224, while the sum is 23.

Adding to 211121012147 its reverse (741210121112), we get a palindrome (952331133259).

The spelling of 211121012147 in words is "two hundred eleven billion, one hundred twenty-one million, twelve thousand, one hundred forty-seven".