1221323032202 has 64 divisors (see below), whose sum is σ = 2442903369984. Its totient is φ = 444164152320.

The previous prime is 1221323032169. The next prime is 1221323032217. The reversal of 1221323032202 is 2022303231221.

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 31 ways as a sum of consecutive naturals, for example, 4456949 + ... + 4723032.

It is an arithmetic number, because the mean of its divisors is an integer number (38170365156).

Almost surely, 2^{1221323032202} is an apocalyptic number.

1221323032202 is an abundant number, since it is smaller than the sum of its proper divisors (1221580337782).

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

1221323032202 is a wasteful number, since it uses less digits than its factorization.

1221323032202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9180063.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 1221323032202 its reverse (2022303231221), we get a palindrome (3243626263423).

The spelling of 1221323032202 in words is "one trillion, two hundred twenty-one billion, three hundred twenty-three million, thirty-two thousand, two hundred two".