10020112021 has 2 divisors, whose sum is σ = 10020112022. Its totient is φ = 10020112020.

The previous prime is 10020112007. The next prime is 10020112087. The reversal of 10020112021 is 12021102001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6584511025 + 3435600996 = 81145^2 + 58614^2 .

It is a cyclic number.

It is not a de Polignac number, because 10020112021 - 2⁹ = 10020111509 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10020111989 and 10020112007.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10020112621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5010056010 + 5010056011.

It is an arithmetic number, because the mean of its divisors is an integer number (5010056011).

Almost surely, 2^10020112021 is an apocalyptic number.

It is an amenable number.

10020112021 is a deficient number, since it is larger than the sum of its proper divisors (1).

10020112021 is an equidigital number, since it uses as much as digits as its factorization.

10020112021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 10020112021 its reverse (12021102001), we get a palindrome (22041214022).

The spelling of 10020112021 in words is "ten billion, twenty million, one hundred twelve thousand, twenty-one".