1221320130222 has 8 divisors (see below), whose sum is σ = 2442640260456. Its totient is φ = 407106710072.

The previous prime is 1221320130209. The next prime is 1221320130227. The reversal of 1221320130222 is 2220310231221.

It is a sphenic number, since it is the product of 3 distinct primes.

1221320130222 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1221320130227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101776677513 + ... + 101776677524.

It is an arithmetic number, because the mean of its divisors is an integer number (305330032557).

Almost surely, 2^{1221320130222} is an apocalyptic number.

1221320130222 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1221320130222 is a wasteful number, since it uses less digits than its factorization.

1221320130222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203553355042.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 1221320130222 its reverse (2220310231221), we get a palindrome (3441630361443).

The spelling of 1221320130222 in words is "one trillion, two hundred twenty-one billion, three hundred twenty million, one hundred thirty thousand, two hundred twenty-two".