10121010111 has 12 divisors (see below), whose sum is σ = 14734350592. Its totient is φ = 6694210656.

The previous prime is 10121010077. The next prime is 10121010113. The reversal of 10121010111 is 11101012101.

It is not a de Polignac number, because 10121010111 - 2²⁹ = 9584139199 is a prime.

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

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10121010093 and 10121010102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10121010113) 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, 4426246 + ... + 4428531.

Almost surely, 2^10121010111 is an apocalyptic number.

10121010111 is a deficient number, since it is larger than the sum of its proper divisors (4613340481).

10121010111 is a wasteful number, since it uses less digits than its factorization.

10121010111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8854910 (or 8854907 counting only the distinct ones).

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

Adding to 10121010111 its reverse (11101012101), we get a palindrome (21222022212).

It can be divided in two parts, 10 and 121010111, that added together give a palindrome (121010121).

The spelling of 10121010111 in words is "ten billion, one hundred twenty-one million, ten thousand, one hundred eleven".