1212100330 has 32 divisors (see below), whose sum is σ = 2494698624. Its totient is φ = 415371456.

The previous prime is 1212100303. The next prime is 1212100333. The reversal of 1212100330 is 330012121.

It is a super-2 number, since 2×1212100330² = 2938374419972217800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1212100330.

It is not an unprimeable number, because it can be changed into a prime (1212100333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 225049 + ... + 230371.

It is an arithmetic number, because the mean of its divisors is an integer number (77959332).

Almost surely, 2^1212100330 is an apocalyptic number.

1212100330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1212100330 is an abundant number, since it is smaller than the sum of its proper divisors (1282598294).

1212100330 is a wasteful number, since it uses less digits than its factorization.

1212100330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8590.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 1212100330 is about 34815.2312932142. The cubic root of 1212100330 is about 1066.2184413429.

Adding to 1212100330 its reverse (330012121), we get a palindrome (1542112451).

The spelling of 1212100330 in words is "one billion, two hundred twelve million, one hundred thousand, three hundred thirty".