1221301001330 has 32 divisors (see below), whose sum is σ = 2314460640960. Its totient is φ = 462725472960.

The previous prime is 1221301001303. The next prime is 1221301001369. The reversal of 1221301001330 is 331001031221.

It is a super-2 number, since 2×1221301001330² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1221301001299 and 1221301001308.

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, 484517 + ... + 1636263.

It is an arithmetic number, because the mean of its divisors is an integer number (72326895030).

Almost surely, 2^{1221301001330} is an apocalyptic number.

1221301001330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1221301001330 is a deficient number, since it is larger than the sum of its proper divisors (1093159639630).

1221301001330 is a wasteful number, since it uses less digits than its factorization.

1221301001330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1157354.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 1221301001330 its reverse (331001031221), we get a palindrome (1552302032551).

The spelling of 1221301001330 in words is "one trillion, two hundred twenty-one billion, three hundred one million, one thousand, three hundred thirty".