10120110021 has 12 divisors (see below), whose sum is σ = 16706213472. Its totient is φ = 5782919976.

The previous prime is 10120110001. The next prime is 10120110041. The reversal of 10120110021 is 12001102101.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (10120110001) and next prime (10120110041).

It is not a de Polignac number, because 10120110021 - 2⁷ = 10120109893 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 = 10120109985 and 10120110012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10120110001) 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 11 ways as a sum of consecutive naturals, for example, 80318271 + ... + 80318396.

It is an arithmetic number, because the mean of its divisors is an integer number (1392184456).

Almost surely, 2^10120110021 is an apocalyptic number.

It is an amenable number.

10120110021 is a deficient number, since it is larger than the sum of its proper divisors (6586103451).

10120110021 is a wasteful number, since it uses less digits than its factorization.

10120110021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160636680 (or 160636677 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 10120110021 its reverse (12001102101), we get a palindrome (22121212122).

The spelling of 10120110021 in words is "ten billion, one hundred twenty million, one hundred ten thousand, twenty-one".