11211611211 has 12 divisors (see below), whose sum is σ = 16898660688. Its totient is φ = 7149433104.

The previous prime is 11211611167. The next prime is 11211611251.

11211611211 is a `hidden beast` number, since 11 + 21 + 1 + 611 + 21 + 1 = 666.

11211611211 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 11211611211 - 2⁹ = 11211610699 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11211611251) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27080980 + ... + 27081393.

It is an arithmetic number, because the mean of its divisors is an integer number (1408221724).

Almost surely, 2^11211611211 is an apocalyptic number.

11211611211 is a deficient number, since it is larger than the sum of its proper divisors (5687049477).

11211611211 is a wasteful number, since it uses less digits than its factorization.

11211611211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54162402 (or 54162399 counting only the distinct ones).

The product of its digits is 24, while the sum is 18.

The spelling of 11211611211 in words is "eleven billion, two hundred eleven million, six hundred eleven thousand, two hundred eleven".