21220133230330 has 32 divisors (see below), whose sum is σ = 39960363018240. Its totient is φ = 8104835518080.

The previous prime is 21220133230301. The next prime is 21220133230333. The reversal of 21220133230330 is 3303233102212.

It is a junction number, because it is equal to n+sod(n) for n = 21220133230295 and 21220133230304.

It is not an unprimeable number, because it can be changed into a prime (21220133230333) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 550580970 + ... + 550619509.

It is an arithmetic number, because the mean of its divisors is an integer number (1248761344320).

Almost surely, 2^{21220133230330} is an apocalyptic number.

21220133230330 is a deficient number, since it is larger than the sum of its proper divisors (18740229787910).

21220133230330 is a wasteful number, since it uses less digits than its factorization.

21220133230330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1101200574.

The product of its (nonzero) digits is 3888, while the sum is 25.

Adding to 21220133230330 its reverse (3303233102212), we get a palindrome (24523366332542).

The spelling of 21220133230330 in words is "twenty-one trillion, two hundred twenty billion, one hundred thirty-three million, two hundred thirty thousand, three hundred thirty".