1221203141304 has 32 divisors (see below), whose sum is σ = 3076313264640. Its totient is φ = 403960325600.

The previous prime is 1221203141251. The next prime is 1221203141363. The reversal of 1221203141304 is 4031413021221.

It is a super-2 number, since 2×1221203141304² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 194208552 + ... + 194214839.

It is an arithmetic number, because the mean of its divisors is an integer number (96134789520).

Almost surely, 2^{1221203141304} is an apocalyptic number.

It is an amenable number.

1221203141304 is an abundant number, since it is smaller than the sum of its proper divisors (1855110123336).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1221203141304 is a wasteful number, since it uses less digits than its factorization.

1221203141304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388423531 (or 388423527 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 1221203141304 its reverse (4031413021221), we get a palindrome (5252616162525).

The spelling of 1221203141304 in words is "one trillion, two hundred twenty-one billion, two hundred three million, one hundred forty-one thousand, three hundred four".