10021120010021 has 4 divisors (see below), whose sum is σ = 10021188167712. Its totient is φ = 10021051852332.

The previous prime is 10021120010009. The next prime is 10021120010039. The reversal of 10021120010021 is 12001002112001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10021120010021 - 2³⁴ = 10003940140837 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10021120009984 and 10021120010011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10021120070021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33857825 + ... + 34152518.

It is an arithmetic number, because the mean of its divisors is an integer number (2505297041928).

Almost surely, 2^{10021120010021} is an apocalyptic number.

It is an amenable number.

10021120010021 is a deficient number, since it is larger than the sum of its proper divisors (68157691).

10021120010021 is an equidigital number, since it uses as much as digits as its factorization.

10021120010021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68157690.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 10021120010021 its reverse (12001002112001), we get a palindrome (22022122122022).

The spelling of 10021120010021 in words is "ten trillion, twenty-one billion, one hundred twenty million, ten thousand, twenty-one".