1144220101 has 4 divisors (see below), whose sum is σ = 1144320192. Its totient is φ = 1144120012.

The previous prime is 1144220083. The next prime is 1144220111. The reversal of 1144220101 is 1010224411.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1010224411 = 7 ⋅144317773.

It is a cyclic number.

It is not a de Polignac number, because 1144220101 - 2⁹ = 1144219589 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 (1144220111) 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, 30301 + ... + 56626.

It is an arithmetic number, because the mean of its divisors is an integer number (286080048).

Almost surely, 2^1144220101 is an apocalyptic number.

It is an amenable number.

1144220101 is a deficient number, since it is larger than the sum of its proper divisors (100091).

1144220101 is an equidigital number, since it uses as much as digits as its factorization.

1144220101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100090.

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 1144220101 is about 33826.3226053321. The cubic root of 1144220101 is about 1045.9313754125.

Adding to 1144220101 its reverse (1010224411), we get a palindrome (2154444512).

The spelling of 1144220101 in words is "one billion, one hundred forty-four million, two hundred twenty thousand, one hundred one".