21334020330 has 64 divisors (see below), whose sum is σ = 59710406400. Its totient is φ = 4876345152.

The previous prime is 21334020329. The next prime is 21334020343. The reversal of 21334020330 is 3302043312.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 21334020297 and 21334020306.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1026349 + ... + 1046928.

It is an arithmetic number, because the mean of its divisors is an integer number (932975100).

Almost surely, 2^21334020330 is an apocalyptic number.

21334020330 is an abundant number, since it is smaller than the sum of its proper divisors (38376386070).

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

21334020330 is a wasteful number, since it uses less digits than its factorization.

21334020330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2073308 (or 2073294 counting only the distinct ones).

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

Adding to 21334020330 its reverse (3302043312), we get a palindrome (24636063642).

The spelling of 21334020330 in words is "twenty-one billion, three hundred thirty-four million, twenty thousand, three hundred thirty".