10101020111 has 16 divisors (see below), whose sum is σ = 12448446528. Its totient is φ = 7981459200.

The previous prime is 10101020093. The next prime is 10101020113. The reversal of 10101020111 is 11102010101.

It is a happy number.

10101020111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-10101020111 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10101020113) 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 15 ways as a sum of consecutive naturals, for example, 3680 + ... + 142181.

It is an arithmetic number, because the mean of its divisors is an integer number (778027908).

Almost surely, 2^10101020111 is an apocalyptic number.

10101020111 is a deficient number, since it is larger than the sum of its proper divisors (2347426417).

10101020111 is a wasteful number, since it uses less digits than its factorization.

10101020111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146642.

The product of its (nonzero) digits is 2, while the sum is 8.

Adding to 10101020111 its reverse (11102010101), we get a palindrome (21203030212).

It can be divided in two parts, 101010 and 20111, that added together give a palindrome (121121).

The spelling of 10101020111 in words is "ten billion, one hundred one million, twenty thousand, one hundred eleven".