10210002121 has 4 divisors (see below), whose sum is σ = 11138184144. Its totient is φ = 9281820100.

The previous prime is 10210002067. The next prime is 10210002133. The reversal of 10210002121 is 12120001201.

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 10210002121 - 2²¹ = 10207904969 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10210002098 and 10210002107.

It is not an unprimeable number, because it can be changed into a prime (10210002161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 464090995 + ... + 464091016.

It is an arithmetic number, because the mean of its divisors is an integer number (2784546036).

Almost surely, 2^10210002121 is an apocalyptic number.

10210002121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10210002121 is a deficient number, since it is larger than the sum of its proper divisors (928182023).

10210002121 is an equidigital number, since it uses as much as digits as its factorization.

10210002121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 928182022.

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

Adding to 10210002121 its reverse (12120001201), we get a palindrome (22330003322).

The spelling of 10210002121 in words is "ten billion, two hundred ten million, two thousand, one hundred twenty-one".