211020111151 has 2 divisors, whose sum is σ = 211020111152. Its totient is φ = 211020111150.

The previous prime is 211020111109. The next prime is 211020111209. The reversal of 211020111151 is 151111020112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 211020111151 - 2¹¹ = 211020109103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211020111101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105510055575 + 105510055576.

It is an arithmetic number, because the mean of its divisors is an integer number (105510055576).

Almost surely, 2^211020111151 is an apocalyptic number.

211020111151 is a deficient number, since it is larger than the sum of its proper divisors (1).

211020111151 is an equidigital number, since it uses as much as digits as its factorization.

211020111151 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20, while the sum is 16.

Adding to 211020111151 its reverse (151111020112), we get a palindrome (362131131263).

The spelling of 211020111151 in words is "two hundred eleven billion, twenty million, one hundred eleven thousand, one hundred fifty-one".