21213203311132 has 24 divisors (see below), whose sum is σ = 42646232574176. Its totient is φ = 9044267286528.

The previous prime is 21213203311117. The next prime is 21213203311163. The reversal of 21213203311132 is 23111330231212.

It is a junction number, because it is equal to n+sod(n) for n = 21213203311097 and 21213203311106.

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, 1962726213 + ... + 1962737020.

Almost surely, 2^{21213203311132} is an apocalyptic number.

It is an amenable number.

21213203311132 is an abundant number, since it is smaller than the sum of its proper divisors (21433029263044).

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

21213203311132 is a wasteful number, since it uses less digits than its factorization.

21213203311132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3925463437 (or 3925463435 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 21213203311132 its reverse (23111330231212), we get a palindrome (44324533542344).

The spelling of 21213203311132 in words is "twenty-one trillion, two hundred thirteen billion, two hundred three million, three hundred eleven thousand, one hundred thirty-two".