1243441101 has 12 divisors (see below), whose sum is σ = 1928602752. Its totient is φ = 710537688.

The previous prime is 1243441097. The next prime is 1243441117. The reversal of 1243441101 is 1011443421.

It is not a de Polignac number, because 1243441101 - 2² = 1243441097 is a prime.

It is a super-2 number, since 2×1243441101² = 3092291543312184402, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1243441601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4229245 + ... + 4229538.

It is an arithmetic number, because the mean of its divisors is an integer number (160716896).

Almost surely, 2^1243441101 is an apocalyptic number.

It is an amenable number.

1243441101 is a deficient number, since it is larger than the sum of its proper divisors (685161651).

1243441101 is an equidigital number, since it uses as much as digits as its factorization.

1243441101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8458800 (or 8458793 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 1243441101 is about 35262.4602233026. The cubic root of 1243441101 is about 1075.3299440795.

Adding to 1243441101 its reverse (1011443421), we get a palindrome (2254884522).

It can be divided in two parts, 12434 and 41101, that added together give a palindrome (53535).

The spelling of 1243441101 in words is "one billion, two hundred forty-three million, four hundred forty-one thousand, one hundred one".