10120213021 has 8 divisors (see below), whose sum is σ = 10231281144. Its totient is φ = 10009282560.

The previous prime is 10120213009. The next prime is 10120213073. The reversal of 10120213021 is 12031202101.

10120213021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 2248087396 + 7872125625 = 47414^2 + 88725^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 10120213021 - 2²¹ = 10118115869 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10120212992 and 10120213010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10120213001) 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 7 ways as a sum of consecutive naturals, for example, 117051 + ... + 184231.

It is an arithmetic number, because the mean of its divisors is an integer number (1278910143).

Almost surely, 2^10120213021 is an apocalyptic number.

It is an amenable number.

10120213021 is a deficient number, since it is larger than the sum of its proper divisors (111068123).

10120213021 is an equidigital number, since it uses as much as digits as its factorization.

10120213021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68831.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 10120213021 its reverse (12031202101), we get a palindrome (22151415122).

The spelling of 10120213021 in words is "ten billion, one hundred twenty million, two hundred thirteen thousand, twenty-one".