21234411330 has 64 divisors (see below), whose sum is σ = 55877931648. Its totient is φ = 5121589760.

The previous prime is 21234411307. The next prime is 21234411353. The reversal of 21234411330 is 3311443212.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (21234411307) and next prime (21234411353).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 21234411330.

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, 98307 + ... + 228326.

It is an arithmetic number, because the mean of its divisors is an integer number (873092682).

Almost surely, 2^21234411330 is an apocalyptic number.

21234411330 is an abundant number, since it is smaller than the sum of its proper divisors (34643520318).

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

21234411330 is a wasteful number, since it uses less digits than its factorization.

21234411330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326851.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 21234411330 its reverse (3311443212), we get a palindrome (24545854542).

The spelling of 21234411330 in words is "twenty-one billion, two hundred thirty-four million, four hundred eleven thousand, three hundred thirty".