10002100121021 has 8 divisors (see below), whose sum is σ = 10533284068320. Its totient is φ = 9471391936272.

The previous prime is 10002100120981. The next prime is 10002100121053. The reversal of 10002100121021 is 12012100120001.

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 10002100121021 - 2²⁶ = 10002033012157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10002100120993 and 10002100121011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10002100121071) 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, 118897475 + ... + 118981568.

It is an arithmetic number, because the mean of its divisors is an integer number (1316660508540).

Almost surely, 2^{10002100121021} is an apocalyptic number.

It is an amenable number.

10002100121021 is a deficient number, since it is larger than the sum of its proper divisors (531183947299).

10002100121021 is a wasteful number, since it uses less digits than its factorization.

10002100121021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237881275.

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

Adding to 10002100121021 its reverse (12012100120001), we get a palindrome (22014200241022).

The spelling of 10002100121021 in words is "ten trillion, two billion, one hundred million, one hundred twenty-one thousand, twenty-one".