10000000021321 has 4 divisors (see below), whose sum is σ = 10011273979392. Its totient is φ = 9988726063252.

The previous prime is 10000000021313. The next prime is 10000000021331. The reversal of 10000000021321 is 12312000000001.

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 10000000021321 - 2³ = 10000000021313 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10000000021298 and 10000000021307.

It is not an unprimeable number, because it can be changed into a prime (10000000021331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5636977705 + ... + 5636979478.

It is an arithmetic number, because the mean of its divisors is an integer number (2502818494848).

Almost surely, 2^{10000000021321} is an apocalyptic number.

It is an amenable number.

10000000021321 is a deficient number, since it is larger than the sum of its proper divisors (11273958071).

10000000021321 is an equidigital number, since it uses as much as digits as its factorization.

10000000021321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11273958070.

The product of its (nonzero) digits is 12, while the sum is 10.

Adding to 10000000021321 its reverse (12312000000001), we get a palindrome (22312000021322).

The spelling of 10000000021321 in words is "ten trillion, twenty-one thousand, three hundred twenty-one".