21001002000113 has 8 divisors (see below), whose sum is σ = 21703749450240. Its totient is φ = 20299835535840.

The previous prime is 21001002000103. The next prime is 21001002000133. The reversal of 21001002000113 is 31100020010012.

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 21001002000113 - 2³⁶ = 20932282523377 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 21001002000094 and 21001002000103.

It is not an unprimeable number, because it can be changed into a prime (21001002000103) 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, 395219453 + ... + 395272586.

It is an arithmetic number, because the mean of its divisors is an integer number (2712968681280).

Almost surely, 2^{21001002000113} is an apocalyptic number.

It is an amenable number.

21001002000113 is a deficient number, since it is larger than the sum of its proper divisors (702747450127).

21001002000113 is an equidigital number, since it uses as much as digits as its factorization.

21001002000113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 790492927.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 21001002000113 its reverse (31100020010012), we get a palindrome (52101022010125).

The spelling of 21001002000113 in words is "twenty-one trillion, one billion, two million, one hundred thirteen", and thus it is an aban number.