21200470132 has 6 divisors (see below), whose sum is σ = 37100822738. Its totient is φ = 10600235064.

The previous prime is 21200470111. The next prime is 21200470139. The reversal of 21200470132 is 23107400212.

It can be written as a sum of positive squares in only one way, i.e., 15012130576 + 6188339556 = 122524^2 + 78666^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21200470139) 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 as a sum of consecutive naturals, namely, 2650058763 + ... + 2650058770.

Almost surely, 2^21200470132 is an apocalyptic number.

It is an amenable number.

21200470132 is a deficient number, since it is larger than the sum of its proper divisors (15900352606).

21200470132 is a wasteful number, since it uses less digits than its factorization.

21200470132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5300117537 (or 5300117535 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 22.

Adding to 21200470132 its reverse (23107400212), we get a palindrome (44307870344).

The spelling of 21200470132 in words is "twenty-one billion, two hundred million, four hundred seventy thousand, one hundred thirty-two".