306212121382 has 16 divisors (see below), whose sum is σ = 467518413312. Its totient is φ = 150396523200.

The previous prime is 306212121373. The next prime is 306212121403. The reversal of 306212121382 is 283121212603.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5942463 + ... + 5993770.

It is an arithmetic number, because the mean of its divisors is an integer number (29219900832).

Almost surely, 2^306212121382 is an apocalyptic number.

306212121382 is a deficient number, since it is larger than the sum of its proper divisors (161306291930).

306212121382 is a wasteful number, since it uses less digits than its factorization.

306212121382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11936463.

The product of its (nonzero) digits is 6912, while the sum is 31.

Adding to 306212121382 its reverse (283121212603), we get a palindrome (589333333985).

The spelling of 306212121382 in words is "three hundred six billion, two hundred twelve million, one hundred twenty-one thousand, three hundred eighty-two".