1221201122322 has 16 divisors (see below), whose sum is σ = 2471828778720. Its totient is φ = 402162618432.

The previous prime is 1221201122303. The next prime is 1221201122441. The reversal of 1221201122322 is 2232211021221.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1226105047 + ... + 1226106042.

It is an arithmetic number, because the mean of its divisors is an integer number (154489298670).

Almost surely, 2^{1221201122322} is an apocalyptic number.

1221201122322 is an abundant number, since it is smaller than the sum of its proper divisors (1250627656398).

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

1221201122322 is a wasteful number, since it uses less digits than its factorization.

1221201122322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2452211177.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 1221201122322 its reverse (2232211021221), we get a palindrome (3453412143543).

The spelling of 1221201122322 in words is "one trillion, two hundred twenty-one billion, two hundred one million, one hundred twenty-two thousand, three hundred twenty-two".