21233311330 has 64 divisors (see below), whose sum is σ = 48072745728. Its totient is φ = 6559580160.

The previous prime is 21233311303. The next prime is 21233311361. The reversal of 21233311330 is 3311333212.

It is a Harshad number since it is a multiple of its sum of digits (22).

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, 35007 + ... + 209026.

It is an arithmetic number, because the mean of its divisors is an integer number (751136652).

Almost surely, 2^21233311330 is an apocalyptic number.

21233311330 is an abundant number, since it is smaller than the sum of its proper divisors (26839434398).

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

21233311330 is a wasteful number, since it uses less digits than its factorization.

21233311330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244171.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 21233311330 its reverse (3311333212), we get a palindrome (24544644542).

The spelling of 21233311330 in words is "twenty-one billion, two hundred thirty-three million, three hundred eleven thousand, three hundred thirty".