21130321132 has 6 divisors (see below), whose sum is σ = 36978061988. Its totient is φ = 10565160564.

The previous prime is 21130321117. The next prime is 21130321133. The reversal of 21130321132 is 23112303112.

It is a super-2 number, since 2×21130321132² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21130321133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2641290138 + ... + 2641290145.

Almost surely, 2^21130321132 is an apocalyptic number.

It is an amenable number.

21130321132 is a deficient number, since it is larger than the sum of its proper divisors (15847740856).

21130321132 is a wasteful number, since it uses less digits than its factorization.

21130321132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5282580287 (or 5282580285 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 21130321132 its reverse (23112303112), we get a palindrome (44242624244).

The spelling of 21130321132 in words is "twenty-one billion, one hundred thirty million, three hundred twenty-one thousand, one hundred thirty-two".