21213602033413 has 16 divisors (see below), whose sum is σ = 21499387660800. Its totient is φ = 20929743984240.

The previous prime is 21213602033381. The next prime is 21213602033489. The reversal of 21213602033413 is 31433020631212.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 21213602033413 - 2⁵ = 21213602033381 is a prime.

It is a super-3 number, since 3×21213602033413³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21213602037413) 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 15 ways as a sum of consecutive naturals, for example, 268015398 + ... + 268094536.

It is an arithmetic number, because the mean of its divisors is an integer number (1343711728800).

Almost surely, 2^{21213602033413} is an apocalyptic number.

It is an amenable number.

21213602033413 is a deficient number, since it is larger than the sum of its proper divisors (285785627387).

21213602033413 is a wasteful number, since it uses less digits than its factorization.

21213602033413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91272.

The product of its (nonzero) digits is 15552, while the sum is 31.

Adding to 21213602033413 its reverse (31433020631212), we get a palindrome (52646622664625).

The spelling of 21213602033413 in words is "twenty-one trillion, two hundred thirteen billion, six hundred two million, thirty-three thousand, four hundred thirteen".