10012120000021 has 8 divisors (see below), whose sum is σ = 10294164252288. Its totient is φ = 9731877948000.

The previous prime is 10012120000007. The next prime is 10012120000031. The reversal of 10012120000021 is 12000002121001.

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

It is a cyclic number.

It is not a de Polignac number, because 10012120000021 - 2²¹ = 10012117902869 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10012119999962 and 10012120000007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10012120000031) 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 7 ways as a sum of consecutive naturals, for example, 450538795 + ... + 450561016.

It is an arithmetic number, because the mean of its divisors is an integer number (1286770531536).

Almost surely, 2^{10012120000021} is an apocalyptic number.

It is an amenable number.

10012120000021 is a deficient number, since it is larger than the sum of its proper divisors (282044252267).

10012120000021 is an equidigital number, since it uses as much as digits as its factorization.

10012120000021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 901100123.

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

Adding to 10012120000021 its reverse (12000002121001), we get a palindrome (22012122121022).

The spelling of 10012120000021 in words is "ten trillion, twelve billion, one hundred twenty million, twenty-one", and thus it is an aban number.