1103201221 has 4 divisors (see below), whose sum is σ = 1104179500. Its totient is φ = 1102222944.

The previous prime is 1103201219. The next prime is 1103201257. The reversal of 1103201221 is 1221023011.

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 120692196 + 982509025 = 10986^2 + 31345^2 .

It is a cyclic number.

It is not a de Polignac number, because 1103201221 - 2¹ = 1103201219 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 (1103201291) 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, 487446 + ... + 489703.

It is an arithmetic number, because the mean of its divisors is an integer number (276044875).

Almost surely, 2^1103201221 is an apocalyptic number.

It is an amenable number.

1103201221 is a deficient number, since it is larger than the sum of its proper divisors (978279).

1103201221 is an equidigital number, since it uses as much as digits as its factorization.

1103201221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 978278.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1103201221 is about 33214.4730652166. The cubic root of 1103201221 is about 1033.2805264609.

Adding to 1103201221 its reverse (1221023011), we get a palindrome (2324224232).

The spelling of 1103201221 in words is "one billion, one hundred three million, two hundred one thousand, two hundred twenty-one".