10110111021 has 12 divisors (see below), whose sum is σ = 15462522972. Its totient is φ = 6343598976.

The previous prime is 10110111019. The next prime is 10110111041. The reversal of 10110111021 is 12011101101.

It can be written as a sum of positive squares in 2 ways, for example, as 4745280996 + 5364830025 = 68886^2 + 73245^2 .

It is not a de Polignac number, because 10110111021 - 2¹ = 10110111019 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 = 10110110994 and 10110111012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10110111041) 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, 33039426 + ... + 33039731.

It is an arithmetic number, because the mean of its divisors is an integer number (1288543581).

Almost surely, 2^10110111021 is an apocalyptic number.

It is an amenable number.

10110111021 is a deficient number, since it is larger than the sum of its proper divisors (5352411951).

10110111021 is a wasteful number, since it uses less digits than its factorization.

10110111021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66079180 (or 66079177 counting only the distinct ones).

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

Adding to 10110111021 its reverse (12011101101), we get a palindrome (22121212122).

The spelling of 10110111021 in words is "ten billion, one hundred ten million, one hundred eleven thousand, twenty-one".