1210121213330 has 16 divisors (see below), whose sum is σ = 2178405253080. Its totient is φ = 484006914432.

The previous prime is 1210121213291. The next prime is 1210121213341. The reversal of 1210121213330 is 333121210121.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1134073775041 + 76047438289 = 1064929^2 + 275767^2 .

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 5073965 + ... + 5307104.

Almost surely, 2^{1210121213330} is an apocalyptic number.

1210121213330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1210121213330 is a deficient number, since it is larger than the sum of its proper divisors (968284039750).

1210121213330 is a wasteful number, since it uses less digits than its factorization.

1210121213330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10392733.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 1210121213330 its reverse (333121210121), we get a palindrome (1543242423451).

The spelling of 1210121213330 in words is "one trillion, two hundred ten billion, one hundred twenty-one million, two hundred thirteen thousand, three hundred thirty".