1312221212330 has 16 divisors (see below), whose sum is σ = 2699426494080. Its totient is φ = 449904415632.

The previous prime is 1312221212329. The next prime is 1312221212353. The reversal of 1312221212330 is 332121222131.

It is a junction number, because it is equal to n+sod(n) for n = 1312221212296 and 1312221212305.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9373008590 + ... + 9373008729.

It is an arithmetic number, because the mean of its divisors is an integer number (168714155880).

Almost surely, 2^{1312221212330} is an apocalyptic number.

1312221212330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1312221212330 is an abundant number, since it is smaller than the sum of its proper divisors (1387205281750).

1312221212330 is a wasteful number, since it uses less digits than its factorization.

1312221212330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18746017333.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 1312221212330 its reverse (332121222131), we get a palindrome (1644342434461).

The spelling of 1312221212330 in words is "one trillion, three hundred twelve billion, two hundred twenty-one million, two hundred twelve thousand, three hundred thirty".