21234055332 has 72 divisors (see below), whose sum is σ = 58050158880. Its totient is φ = 6023203200.

The previous prime is 21234055307. The next prime is 21234055357. The reversal of 21234055332 is 23355043212.

It is an interprime number because it is at equal distance from previous prime (21234055307) and next prime (21234055357).

It is a self number, because there is not a number n which added to its sum of digits gives 21234055332.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 48169 + ... + 211632.

Almost surely, 2^21234055332 is an apocalyptic number.

It is an amenable number.

21234055332 is an abundant number, since it is smaller than the sum of its proper divisors (36816103548).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21234055332 is a wasteful number, since it uses less digits than its factorization.

21234055332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259961 (or 259952 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 30.

Adding to 21234055332 its reverse (23355043212), we get a palindrome (44589098544).

The spelling of 21234055332 in words is "twenty-one billion, two hundred thirty-four million, fifty-five thousand, three hundred thirty-two".