10121111011 has 4 divisors (see below), whose sum is σ = 11041212024. Its totient is φ = 9201010000.

The previous prime is 10121111009. The next prime is 10121111023. The reversal of 10121111011 is 11011112101.

10121111011 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10121111011 - 2¹ = 10121111009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10121111071) 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 in 3 ways as a sum of consecutive naturals, for example, 460050490 + ... + 460050511.

It is an arithmetic number, because the mean of its divisors is an integer number (2760303006).

Almost surely, 2^10121111011 is an apocalyptic number.

10121111011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

10121111011 is a deficient number, since it is larger than the sum of its proper divisors (920101013).

10121111011 is an equidigital number, since it uses as much as digits as its factorization.

10121111011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 920101012.

The product of its (nonzero) digits is 2, while the sum is 10.

Adding to 10121111011 its reverse (11011112101), we get a palindrome (21132223112).

It can be divided in two parts, 101 and 21111011, that added together give a palindrome (21111112).

The spelling of 10121111011 in words is "ten billion, one hundred twenty-one million, one hundred eleven thousand, eleven".