1123220203221 has 8 divisors (see below), whose sum is σ = 1497633913440. Its totient is φ = 748809980912.

The previous prime is 1123220203213. The next prime is 1123220203223. The reversal of 1123220203221 is 1223020223211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1123220203221 - 2³ = 1123220203213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123220203223) 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, 5611 + ... + 1498823.

It is an arithmetic number, because the mean of its divisors is an integer number (187204239180).

Almost surely, 2^{1123220203221} is an apocalyptic number.

It is an amenable number.

1123220203221 is a deficient number, since it is larger than the sum of its proper divisors (374413710219).

1123220203221 is a wasteful number, since it uses less digits than its factorization.

1123220203221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1743955.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 1123220203221 its reverse (1223020223211), we get a palindrome (2346240426432).

The spelling of 1123220203221 in words is "one trillion, one hundred twenty-three billion, two hundred twenty million, two hundred three thousand, two hundred twenty-one".