1212320331030 has 64 divisors (see below), whose sum is σ = 3093356252160. Its totient is φ = 303395005056.

The previous prime is 1212320330959. The next prime is 1212320331037. The reversal of 1212320331030 is 301330232121.

It is a junction number, because it is equal to n+sod(n) for n = 1212320330988 and 1212320331006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212320331037) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 16538770 + ... + 16611909.

It is an arithmetic number, because the mean of its divisors is an integer number (48333691440).

Almost surely, 2^{1212320331030} is an apocalyptic number.

1212320331030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1212320331030 is an abundant number, since it is smaller than the sum of its proper divisors (1881035921130).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1212320331030 is a wasteful number, since it uses less digits than its factorization.

1212320331030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33150765.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 1212320331030 its reverse (301330232121), we get a palindrome (1513650563151).

The spelling of 1212320331030 in words is "one trillion, two hundred twelve billion, three hundred twenty million, three hundred thirty-one thousand, thirty".