21213416135324 has 24 divisors (see below), whose sum is σ = 42483326097408. Its totient is φ = 9079358238000.

The previous prime is 21213416135297. The next prime is 21213416135333. The reversal of 21213416135324 is 42353161431212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 504387764 + ... + 504429819.

It is an arithmetic number, because the mean of its divisors is an integer number (1770138587392).

Almost surely, 2^{21213416135324} is an apocalyptic number.

It is an amenable number.

21213416135324 is an abundant number, since it is smaller than the sum of its proper divisors (21269909962084).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21213416135324 is a wasteful number, since it uses less digits than its factorization.

21213416135324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1008818345 (or 1008818343 counting only the distinct ones).

The product of its digits is 103680, while the sum is 38.

Adding to 21213416135324 its reverse (42353161431212), we get a palindrome (63566577566536).

The spelling of 21213416135324 in words is "twenty-one trillion, two hundred thirteen billion, four hundred sixteen million, one hundred thirty-five thousand, three hundred twenty-four".