211021102151 has 2 divisors, whose sum is σ = 211021102152. Its totient is φ = 211021102150.

The previous prime is 211021102139. The next prime is 211021102169. The reversal of 211021102151 is 151201120112.

211021102151 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 a de Polignac number, because none of the positive numbers 2^k-211021102151 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211021102651) 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, 105510551075 + 105510551076.

It is an arithmetic number, because the mean of its divisors is an integer number (105510551076).

Almost surely, 2^211021102151 is an apocalyptic number.

211021102151 is a deficient number, since it is larger than the sum of its proper divisors (1).

211021102151 is an equidigital number, since it uses as much as digits as its factorization.

211021102151 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40, while the sum is 17.

Adding to 211021102151 its reverse (151201120112), we get a palindrome (362222222263).

The spelling of 211021102151 in words is "two hundred eleven billion, twenty-one million, one hundred two thousand, one hundred fifty-one".