1123332210221 has 4 divisors (see below), whose sum is σ = 1209742380252. Its totient is φ = 1036922040192.

The previous prime is 1123332210211. The next prime is 1123332210281. The reversal of 1123332210221 is 1220122333211.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 57660015625 + 1065672194596 = 240125^2 + 1032314^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1123332210221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123332210211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43205084996 + ... + 43205085021.

It is an arithmetic number, because the mean of its divisors is an integer number (302435595063).

Almost surely, 2^{1123332210221} is an apocalyptic number.

It is an amenable number.

1123332210221 is a deficient number, since it is larger than the sum of its proper divisors (86410170031).

1123332210221 is an equidigital number, since it uses as much as digits as its factorization.

1123332210221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86410170030.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 1123332210221 its reverse (1220122333211), we get a palindrome (2343454543432).

The spelling of 1123332210221 in words is "one trillion, one hundred twenty-three billion, three hundred thirty-two million, two hundred ten thousand, two hundred twenty-one".