1121144401 has 4 divisors (see below), whose sum is σ = 1207386292. Its totient is φ = 1034902512.

The previous prime is 1121144399. The next prime is 1121144429. The reversal of 1121144401 is 1044411211.

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 369562176 + 751582225 = 19224^2 + 27415^2 .

It is a cyclic number.

It is not a de Polignac number, because 1121144401 - 2¹ = 1121144399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121144201) 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, 43120926 + ... + 43120951.

It is an arithmetic number, because the mean of its divisors is an integer number (301846573).

Almost surely, 2^1121144401 is an apocalyptic number.

It is an amenable number.

1121144401 is a deficient number, since it is larger than the sum of its proper divisors (86241891).

1121144401 is an equidigital number, since it uses as much as digits as its factorization.

1121144401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86241890.

The product of its (nonzero) digits is 128, while the sum is 19.

The square root of 1121144401 is about 33483.4944562242. The cubic root of 1121144401 is about 1038.8524080292.

Adding to 1121144401 its reverse (1044411211), we get a palindrome (2165555612).

The spelling of 1121144401 in words is "one billion, one hundred twenty-one million, one hundred forty-four thousand, four hundred one".