10021012000021 has 4 divisors (see below), whose sum is σ = 10932013090944. Its totient is φ = 9110010909100.

The previous prime is 10021011999991. The next prime is 10021012000093. The reversal of 10021012000021 is 12000021012001.

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 10021012000021 - 2³⁵ = 9986652261653 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10021011999971 and 10021012000007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10021012000421) 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, 455500545445 + ... + 455500545466.

It is an arithmetic number, because the mean of its divisors is an integer number (2733003272736).

Almost surely, 2^{10021012000021} is an apocalyptic number.

10021012000021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10021012000021 is a deficient number, since it is larger than the sum of its proper divisors (911001090923).

10021012000021 is an equidigital number, since it uses as much as digits as its factorization.

10021012000021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 911001090922.

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

Adding to 10021012000021 its reverse (12000021012001), we get a palindrome (22021033012022).

The spelling of 10021012000021 in words is "ten trillion, twenty-one billion, twelve million, twenty-one", and thus it is an aban number and an uban number.