1211022221322 has 32 divisors (see below), whose sum is σ = 2534439186432. Its totient is φ = 385353319104.

The previous prime is 1211022221303. The next prime is 1211022221341. The reversal of 1211022221322 is 2231222201121.

It is an interprime number because it is at equal distance from previous prime (1211022221303) and next prime (1211022221341).

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 15 ways as a sum of consecutive naturals, for example, 51451018 + ... + 51474549.

It is an arithmetic number, because the mean of its divisors is an integer number (79201224576).

Almost surely, 2^{1211022221322} is an apocalyptic number.

1211022221322 is an abundant number, since it is smaller than the sum of its proper divisors (1323416965110).

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

1211022221322 is a wasteful number, since it uses less digits than its factorization.

1211022221322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102925662.

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

Adding to 1211022221322 its reverse (2231222201121), we get a palindrome (3442244422443).

The spelling of 1211022221322 in words is "one trillion, two hundred eleven billion, twenty-two million, two hundred twenty-one thousand, three hundred twenty-two".