1221300310 has 16 divisors (see below), whose sum is σ = 2218510800. Its totient is φ = 484037856.

The previous prime is 1221300307. The next prime is 1221300341. The reversal of 1221300310 is 130031221.

It is a super-2 number, since 2×1221300310² = 2983148894412192200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 559140 + ... + 561319.

It is an arithmetic number, because the mean of its divisors is an integer number (138656925).

Almost surely, 2^1221300310 is an apocalyptic number.

1221300310 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1221300310 is a deficient number, since it is larger than the sum of its proper divisors (997210490).

1221300310 is a wasteful number, since it uses less digits than its factorization.

1221300310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1120575.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 1221300310 is about 34947.1073194907. The cubic root of 1221300310 is about 1068.9092182795.

Adding to 1221300310 its reverse (130031221), we get a palindrome (1351331531).

The spelling of 1221300310 in words is "one billion, two hundred twenty-one million, three hundred thousand, three hundred ten".