1213123330 has 16 divisors (see below), whose sum is σ = 2189814264. Its totient is φ = 483873280.

The previous prime is 1213123319. The next prime is 1213123357. The reversal of 1213123330 is 333213121.

It can be written as a sum of positive squares in 4 ways, for example, as 477466201 + 735657129 = 21851^2 + 27123^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1213123298 and 1213123307.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 168301 + ... + 175360.

Almost surely, 2^1213123330 is an apocalyptic number.

1213123330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1213123330 is a deficient number, since it is larger than the sum of its proper divisors (976690934).

1213123330 is a wasteful number, since it uses less digits than its factorization.

1213123330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344021.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 1213123330 is about 34829.9200401035. The cubic root of 1213123330 is about 1066.5183160656.

Adding to 1213123330 its reverse (333213121), we get a palindrome (1546336451).

The spelling of 1213123330 in words is "one billion, two hundred thirteen million, one hundred twenty-three thousand, three hundred thirty".