10000002121 has 16 divisors (see below), whose sum is σ = 10332066880. Its totient is φ = 9673836480.

The previous prime is 10000002113. The next prime is 10000002143. The reversal of 10000002121 is 12120000001.

It is a cyclic number.

It is not a de Polignac number, because 10000002121 - 2³ = 10000002113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10000002521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3214915 + ... + 3218023.

It is an arithmetic number, because the mean of its divisors is an integer number (645754180).

Almost surely, 2^10000002121 is an apocalyptic number.

It is an amenable number.

10000002121 is a deficient number, since it is larger than the sum of its proper divisors (332064759).

10000002121 is an equidigital number, since it uses as much as digits as its factorization.

10000002121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4024.

The product of its (nonzero) digits is 4, while the sum is 7.

Adding to 10000002121 its reverse (12120000001), we get a palindrome (22120002122).

The spelling of 10000002121 in words is "ten billion, two thousand, one hundred twenty-one".