1001220101321 has 8 divisors (see below), whose sum is σ = 1105399630944. Its totient is φ = 899233825120.

The previous prime is 1001220101303. The next prime is 1001220101341. The reversal of 1001220101321 is 1231010221001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1001220101321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1001220101296 and 1001220101305.

It is not an unprimeable number, because it can be changed into a prime (1001220101341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 548312396 + ... + 548314221.

It is an arithmetic number, because the mean of its divisors is an integer number (138174953868).

Almost surely, 2^{1001220101321} is an apocalyptic number.

1001220101321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1001220101321 is a deficient number, since it is larger than the sum of its proper divisors (104179529623).

1001220101321 is a wasteful number, since it uses less digits than its factorization.

1001220101321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1096626711.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 1001220101321 its reverse (1231010221001), we get a palindrome (2232230322322).

The spelling of 1001220101321 in words is "one trillion, one billion, two hundred twenty million, one hundred one thousand, three hundred twenty-one".