2121223330 has 16 divisors (see below), whose sum is σ = 3861104760. Its totient is φ = 838955392.

The previous prime is 2121223249. The next prime is 2121223337. The reversal of 2121223330 is 333221212.

It can be written as a sum of positive squares in 4 ways, for example, as 1437243921 + 683979409 = 37911^2 + 26153^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2121223298 and 2121223307.

It is not an unprimeable number, because it can be changed into a prime (2121223337) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1190809 + ... + 1192588.

Almost surely, 2^2121223330 is an apocalyptic number.

2121223330 is a deficient number, since it is larger than the sum of its proper divisors (1739881430).

2121223330 is a wasteful number, since it uses less digits than its factorization.

2121223330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2383493.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 2121223330 is about 46056.7403318993. The cubic root of 2121223330 is about 1284.8787058671.

Adding to 2121223330 its reverse (333221212), we get a palindrome (2454444542).

The spelling of 2121223330 in words is "two billion, one hundred twenty-one million, two hundred twenty-three thousand, three hundred thirty".