1320221103212 has 48 divisors (see below), whose sum is σ = 2651525452800. Its totient is φ = 569586884160.

The previous prime is 1320221103203. The next prime is 1320221103301. The reversal of 1320221103212 is 2123011220231.

It is a super-2 number, since 2×1320221103212² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8692988 + ... + 8843555.

It is an arithmetic number, because the mean of its divisors is an integer number (55240113600).

Almost surely, 2^{1320221103212} is an apocalyptic number.

It is an amenable number.

1320221103212 is an abundant number, since it is smaller than the sum of its proper divisors (1331304349588).

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

1320221103212 is a wasteful number, since it uses less digits than its factorization.

1320221103212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17536646 (or 17536644 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 1320221103212 its reverse (2123011220231), we get a palindrome (3443232323443).

The spelling of 1320221103212 in words is "one trillion, three hundred twenty billion, two hundred twenty-one million, one hundred three thousand, two hundred twelve".