10000021000010 has 8 divisors (see below), whose sum is σ = 18000037800036. Its totient is φ = 4000008400000.

The previous prime is 10000020999989. The next prime is 10000021000027. The reversal of 10000021000010 is 1000012000001.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 9147739377529 + 852281622481 = 3024523^2 + 923191^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (5).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 10000020999958 and 10000021000003.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 500001049991 + ... + 500001050010.

Almost surely, 2^{10000021000010} is an apocalyptic number.

10000021000010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

10000021000010 is a deficient number, since it is larger than the sum of its proper divisors (8000016800026).

10000021000010 is a wasteful number, since it uses less digits than its factorization.

10000021000010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1000002100008.

The product of its (nonzero) digits is 2, while the sum is 5.

Adding to 10000021000010 its reverse (1000012000001), we get a palindrome (11000033000011).

Subtracting from 10000021000010 its reverse (1000012000001), we obtain a palindrome (9000009000009).

The spelling of 10000021000010 in words is "ten trillion, twenty-one million, ten", and thus it is an aban number and an uban number.