1312221210330 has 32 divisors (see below), whose sum is σ = 3159589333824. Its totient is φ = 348785830656.

The previous prime is 1312221210283. The next prime is 1312221210331. The reversal of 1312221210330 is 330121222131.

It is a junction number, because it is equal to n+sod(n) for n = 1312221210297 and 1312221210306.

It is not an unprimeable number, because it can be changed into a prime (1312221210331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71229727 + ... + 71248146.

It is an arithmetic number, because the mean of its divisors is an integer number (98737166682).

Almost surely, 2^{1312221210330} is an apocalyptic number.

1312221210330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1312221210330 is an abundant number, since it is smaller than the sum of its proper divisors (1847368123494).

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

1312221210330 is a wasteful number, since it uses less digits than its factorization.

1312221210330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142478190.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 1312221210330 its reverse (330121222131), we get a palindrome (1642342432461).

The spelling of 1312221210330 in words is "one trillion, three hundred twelve billion, two hundred twenty-one million, two hundred ten thousand, three hundred thirty".