1221102004350 has 96 divisors (see below), whose sum is σ = 3091940603136. Its totient is φ = 318845894400.

The previous prime is 1221102004337. The next prime is 1221102004387. The reversal of 1221102004350 is 534002011221.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 1314570 + ... + 2042130.

It is an arithmetic number, because the mean of its divisors is an integer number (32207714616).

Almost surely, 2^{1221102004350} is an apocalyptic number.

1221102004350 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1221102004350, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1545970301568).

1221102004350 is an abundant number, since it is smaller than the sum of its proper divisors (1870838598786).

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

1221102004350 is a wasteful number, since it uses less digits than its factorization.

1221102004350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 727810 (or 727805 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

Adding to 1221102004350 its reverse (534002011221), we get a palindrome (1755104015571).

The spelling of 1221102004350 in words is "one trillion, two hundred twenty-one billion, one hundred two million, four thousand, three hundred fifty".