1121220221233 has 16 divisors (see below), whose sum is σ = 1347635773440. Its totient is φ = 912023004816.

The previous prime is 1121220221213. The next prime is 1121220221243. The reversal of 1121220221233 is 3321220221211.

It is not a de Polignac number, because 1121220221233 - 2⁹ = 1121220220721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121220221213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27397273 + ... + 27438166.

It is an arithmetic number, because the mean of its divisors is an integer number (84227235840).

Almost surely, 2^{1121220221233} is an apocalyptic number.

It is an amenable number.

1121220221233 is a deficient number, since it is larger than the sum of its proper divisors (226415552207).

1121220221233 is a wasteful number, since it uses less digits than its factorization.

1121220221233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54835596.

The product of its (nonzero) digits is 576, while the sum is 22.

Subtracting from 1121220221233 its sum of digits (22), we obtain a palindrome (1121220221211).

Adding to 1121220221233 its reverse (3321220221211), we get a palindrome (4442440442444).

The spelling of 1121220221233 in words is "one trillion, one hundred twenty-one billion, two hundred twenty million, two hundred twenty-one thousand, two hundred thirty-three".