21021201002113 has 8 divisors (see below), whose sum is σ = 22646768906048. Its totient is φ = 19396854875664.

The previous prime is 21021201002111. The next prime is 21021201002119. The reversal of 21021201002113 is 31120010212012.

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 21021201002113 - 2¹ = 21021201002111 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21021201002111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 305408631 + ... + 305477452.

It is an arithmetic number, because the mean of its divisors is an integer number (2830846113256).

Almost surely, 2^{21021201002113} is an apocalyptic number.

It is an amenable number.

21021201002113 is a deficient number, since it is larger than the sum of its proper divisors (1625567903935).

21021201002113 is a wasteful number, since it uses less digits than its factorization.

21021201002113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 610888743.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 21021201002113 its reverse (31120010212012), we get a palindrome (52141211214125).

The spelling of 21021201002113 in words is "twenty-one trillion, twenty-one billion, two hundred one million, two thousand, one hundred thirteen".