1122221022212 has 24 divisors (see below), whose sum is σ = 2031661392600. Its totient is φ = 541747374336.

The previous prime is 1122221022191. The next prime is 1122221022217. The reversal of 1122221022212 is 2122201222211.

It can be written as a sum of positive squares in 4 ways, for example, as 741551765956 + 380669256256 = 861134^2 + 616984^2 .

It is not an unprimeable number, because it can be changed into a prime (1122221022217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5146718 + ... + 5360330.

It is an arithmetic number, because the mean of its divisors is an integer number (84652558025).

Almost surely, 2^{1122221022212} is an apocalyptic number.

It is an amenable number.

1122221022212 is a deficient number, since it is larger than the sum of its proper divisors (909440370388).

1122221022212 is a wasteful number, since it uses less digits than its factorization.

1122221022212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258935 (or 258933 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 1122221022212 its reverse (2122201222211), we get a palindrome (3244422244423).

The spelling of 1122221022212 in words is "one trillion, one hundred twenty-two billion, two hundred twenty-one million, twenty-two thousand, two hundred twelve".