21532314332 has 6 divisors (see below), whose sum is σ = 37681550088. Its totient is φ = 10766157164.

The previous prime is 21532314329. The next prime is 21532314341. The reversal of 21532314332 is 23341323512.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21532314295 and 21532314304.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2691539288 + ... + 2691539295.

It is an arithmetic number, because the mean of its divisors is an integer number (6280258348).

Almost surely, 2^21532314332 is an apocalyptic number.

It is an amenable number.

21532314332 is a deficient number, since it is larger than the sum of its proper divisors (16149235756).

21532314332 is a wasteful number, since it uses less digits than its factorization.

21532314332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5383078587 (or 5383078585 counting only the distinct ones).

The product of its digits is 12960, while the sum is 29.

Adding to 21532314332 its reverse (23341323512), we get a palindrome (44873637844).

The spelling of 21532314332 in words is "twenty-one billion, five hundred thirty-two million, three hundred fourteen thousand, three hundred thirty-two".