1221310100300 has 18 divisors (see below), whose sum is σ = 2650242917868. Its totient is φ = 488524040080.

The previous prime is 1221310100299. The next prime is 1221310100303. The reversal of 1221310100300 is 30010131221.

It is a super-2 number, since 2×1221310100300² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1221310100303) 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 5 ways as a sum of consecutive naturals, for example, 6106550402 + ... + 6106550601.

Almost surely, 2^{1221310100300} is an apocalyptic number.

1221310100300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1221310100300 is an abundant number, since it is smaller than the sum of its proper divisors (1428932817568).

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

1221310100300 is a wasteful number, since it uses less digits than its factorization.

1221310100300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12213101017 (or 12213101010 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 1221310100300 its reverse (30010131221), we get a palindrome (1251320231521).

The spelling of 1221310100300 in words is "one trillion, two hundred twenty-one billion, three hundred ten million, one hundred thousand, three hundred".