10101012111 has 36 divisors (see below), whose sum is σ = 15564900000. Its totient is φ = 6310983168.

The previous prime is 10101012107. The next prime is 10101012151. The reversal of 10101012111 is 11121010101.

It is not a de Polignac number, because 10101012111 - 2² = 10101012107 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 10101012093 and 10101012102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10101012151) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 613515 + ... + 629763.

Almost surely, 2^10101012111 is an apocalyptic number.

10101012111 is a deficient number, since it is larger than the sum of its proper divisors (5463887889).

10101012111 is a wasteful number, since it uses less digits than its factorization.

10101012111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16528 (or 16508 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

Adding to 10101012111 its reverse (11121010101), we get a palindrome (21222022212).

The spelling of 10101012111 in words is "ten billion, one hundred one million, twelve thousand, one hundred eleven".