1122222022221 has 12 divisors (see below), whose sum is σ = 1579193318112. Its totient is φ = 708771802824.

The previous prime is 1122222022211. The next prime is 1122222022289. The reversal of 1122222022221 is 1222202222211.

It is not a de Polignac number, because 1122222022221 - 2⁶ = 1122222022157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122222022211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 518106961 + ... + 518109126.

It is an arithmetic number, because the mean of its divisors is an integer number (131599443176).

Almost surely, 2^{1122222022221} is an apocalyptic number.

It is an amenable number.

1122222022221 is a deficient number, since it is larger than the sum of its proper divisors (456971295891).

1122222022221 is a wasteful number, since it uses less digits than its factorization.

1122222022221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1036216128 (or 1036216109 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 1122222022221 its reverse (1222202222211), we get a palindrome (2344424244432).

The spelling of 1122222022221 in words is "one trillion, one hundred twenty-two billion, two hundred twenty-two million, twenty-two thousand, two hundred twenty-one".