10211121111 has 12 divisors (see below), whose sum is σ = 14462811752. Its totient is φ = 6406977408.

The previous prime is 10211121023. The next prime is 10211121133. The reversal of 10211121111 is 11112111201.

10211121111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 10211121111 - 2²³ = 10202732503 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10211121161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5887900 + ... + 5889633.

Almost surely, 2^10211121111 is an apocalyptic number.

10211121111 is a deficient number, since it is larger than the sum of its proper divisors (4251690641).

10211121111 is a wasteful number, since it uses less digits than its factorization.

10211121111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11777570 (or 11777553 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 10211121111 its reverse (11112111201), we get a palindrome (21323232312).

The spelling of 10211121111 in words is "ten billion, two hundred eleven million, one hundred twenty-one thousand, one hundred eleven".