21340300332 has 24 divisors (see below), whose sum is σ = 53624344816. Its totient is φ = 6566246208.

The previous prime is 21340300309. The next prime is 21340300337. The reversal of 21340300332 is 23300304312.

It is a junction number, because it is equal to n+sod(n) for n = 21340300299 and 21340300308.

It is not an unprimeable number, because it can be changed into a prime (21340300337) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68398243 + ... + 68398554.

Almost surely, 2^21340300332 is an apocalyptic number.

It is an amenable number.

21340300332 is an abundant number, since it is smaller than the sum of its proper divisors (32284044484).

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

21340300332 is a wasteful number, since it uses less digits than its factorization.

21340300332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136796817 (or 136796815 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 21.

Adding to 21340300332 its reverse (23300304312), we get a palindrome (44640604644).

The spelling of 21340300332 in words is "twenty-one billion, three hundred forty million, three hundred thousand, three hundred thirty-two".