21233333330 has 32 divisors (see below), whose sum is σ = 41704770240. Its totient is φ = 7719318720.

The previous prime is 21233333311. The next prime is 21233333351. The reversal of 21233333330 is 3333333212.

It is a self number, because there is not a number n which added to its sum of digits gives 21233333330.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 474356 + ... + 517184.

It is an arithmetic number, because the mean of its divisors is an integer number (1303274070).

Almost surely, 2^21233333330 is an apocalyptic number.

21233333330 is a deficient number, since it is larger than the sum of its proper divisors (20471436910).

21233333330 is a wasteful number, since it uses less digits than its factorization.

21233333330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47354.

The product of its (nonzero) digits is 8748, while the sum is 26.

Adding to 21233333330 its reverse (3333333212), we get a palindrome (24566666542).

The spelling of 21233333330 in words is "twenty-one billion, two hundred thirty-three million, three hundred thirty-three thousand, three hundred thirty".