10002012121021 has 8 divisors (see below), whose sum is σ = 10564765992704. Its totient is φ = 9454265019360.

The previous prime is 10002012120977. The next prime is 10002012121069. The reversal of 10002012121021 is 12012121020001.

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 10002012121021 - 2⁹ = 10002012120509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10002012120992 and 10002012121010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10002012421021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3751691136 + ... + 3751693801.

It is an arithmetic number, because the mean of its divisors is an integer number (1320595749088).

Almost surely, 2^{10002012121021} is an apocalyptic number.

It is an amenable number.

10002012121021 is a deficient number, since it is larger than the sum of its proper divisors (562753871683).

10002012121021 is an equidigital number, since it uses as much as digits as its factorization.

10002012121021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7503385011.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 10002012121021 its reverse (12012121020001), we get a palindrome (22014133141022).

The spelling of 10002012121021 in words is "ten trillion, two billion, twelve million, one hundred twenty-one thousand, twenty-one".