21202032213 has 48 divisors (see below), whose sum is σ = 32074099200. Its totient is φ = 13480629120.

The previous prime is 21202032191. The next prime is 21202032233. The reversal of 21202032213 is 31223020212.

It is not a de Polignac number, because 21202032213 - 2⁸ = 21202031957 is a prime.

It is a super-2 number, since 2×21202032213² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21202032233) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5989198 + ... + 5992736.

It is an arithmetic number, because the mean of its divisors is an integer number (668210400).

Almost surely, 2^21202032213 is an apocalyptic number.

It is an amenable number.

21202032213 is a deficient number, since it is larger than the sum of its proper divisors (10872066987).

21202032213 is a wasteful number, since it uses less digits than its factorization.

21202032213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3882 (or 3879 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 21202032213 its reverse (31223020212), we get a palindrome (52425052425).

The spelling of 21202032213 in words is "twenty-one billion, two hundred two million, thirty-two thousand, two hundred thirteen".