21202234132 has 24 divisors (see below), whose sum is σ = 37655755200. Its totient is φ = 10444160256.

The previous prime is 21202234127. The next prime is 21202234133. The reversal of 21202234132 is 23143220212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21202234133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30244 + ... + 208132.

It is an arithmetic number, because the mean of its divisors is an integer number (1568989800).

Almost surely, 2^21202234132 is an apocalyptic number.

It is an amenable number.

21202234132 is a deficient number, since it is larger than the sum of its proper divisors (16453521068).

21202234132 is a wasteful number, since it uses less digits than its factorization.

21202234132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178335 (or 178333 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 21202234132 its reverse (23143220212), we get a palindrome (44345454344).

The spelling of 21202234132 in words is "twenty-one billion, two hundred two million, two hundred thirty-four thousand, one hundred thirty-two".