1213221303300 has 72 divisors (see below), whose sum is σ = 3511229947456. Its totient is φ = 323435698560.

The previous prime is 1213221303299. The next prime is 1213221303317. The reversal of 1213221303300 is 33031223121.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 521514 + ... + 1642686.

Almost surely, 2^{1213221303300} is an apocalyptic number.

1213221303300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1213221303300 is an abundant number, since it is smaller than the sum of its proper divisors (2298008644156).

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

1213221303300 is a wasteful number, since it uses less digits than its factorization.

1213221303300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1124797 (or 1124790 counting only the distinct ones).

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

Adding to 1213221303300 its reverse (33031223121), we get a palindrome (1246252526421).

The spelling of 1213221303300 in words is "one trillion, two hundred thirteen billion, two hundred twenty-one million, three hundred three thousand, three hundred".