1221300321092 has 24 divisors (see below), whose sum is σ = 2249921667840. Its totient is φ = 578470070880.

The previous prime is 1221300321091. The next prime is 1221300321127. The reversal of 1221300321092 is 2901230031221.

It is not an unprimeable number, because it can be changed into a prime (1221300321091) 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, 539978 + ... + 1653534.

It is an arithmetic number, because the mean of its divisors is an integer number (93746736160).

Almost surely, 2^{1221300321092} is an apocalyptic number.

It is an amenable number.

1221300321092 is a deficient number, since it is larger than the sum of its proper divisors (1028621346748).

1221300321092 is a wasteful number, since it uses less digits than its factorization.

1221300321092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1128011 (or 1128009 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 26.

The spelling of 1221300321092 in words is "one trillion, two hundred twenty-one billion, three hundred million, three hundred twenty-one thousand, ninety-two".