10002010021 has 8 divisors (see below), whose sum is σ = 10022492480. Its totient is φ = 9981547488.

The previous prime is 10002010009. The next prime is 10002010033. The reversal of 10002010021 is 12001020001.

It is an interprime number because it is at equal distance from previous prime (10002010009) and next prime (10002010033).

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 10002010021 - 2⁵ = 10002009989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10002009986 and 10002010013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10002010091) 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, 1353625 + ... + 1360993.

It is an arithmetic number, because the mean of its divisors is an integer number (1252811560).

Almost surely, 2^10002010021 is an apocalyptic number.

It is an amenable number.

10002010021 is a deficient number, since it is larger than the sum of its proper divisors (20482459).

10002010021 is an equidigital number, since it uses as much as digits as its factorization.

10002010021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9963.

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

Adding to 10002010021 its reverse (12001020001), we get a palindrome (22003030022).

The spelling of 10002010021 in words is "ten billion, two million, ten thousand, twenty-one".