1221300321093 has 6 divisors (see below), whose sum is σ = 1764100463814. Its totient is φ = 814200214056.

The previous prime is 1221300321091. The next prime is 1221300321127. The reversal of 1221300321093 is 3901230031221.

1221300321093 is a `hidden beast` number, since 1 + 221 + 30 + 0 + 321 + 0 + 93 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1115097984324 + 106202336769 = 1055982^2 + 325887^2 .

It is not a de Polignac number, because 1221300321093 - 2¹ = 1221300321091 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1221300321091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 67850017830 + ... + 67850017847.

It is an arithmetic number, because the mean of its divisors is an integer number (294016743969).

Almost surely, 2^{1221300321093} is an apocalyptic number.

It is an amenable number.

1221300321093 is a deficient number, since it is larger than the sum of its proper divisors (542800142721).

1221300321093 is a wasteful number, since it uses less digits than its factorization.

1221300321093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135700035683 (or 135700035680 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The spelling of 1221300321093 in words is "one trillion, two hundred twenty-one billion, three hundred million, three hundred twenty-one thousand, ninety-three".