11421443211 has 16 divisors (see below), whose sum is σ = 15279022080. Its totient is φ = 7589116800.

The previous prime is 11421443203. The next prime is 11421443227. The reversal of 11421443211 is 11234412411.

It is a happy number.

It is not a de Polignac number, because 11421443211 - 2³ = 11421443203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11421443261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1491330 + ... + 1498968.

It is an arithmetic number, because the mean of its divisors is an integer number (954938880).

Almost surely, 2^11421443211 is an apocalyptic number.

11421443211 is a deficient number, since it is larger than the sum of its proper divisors (3857578869).

11421443211 is a wasteful number, since it uses less digits than its factorization.

11421443211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9226.

The product of its digits is 768, while the sum is 24.

Adding to 11421443211 its reverse (11234412411), we get a palindrome (22655855622).

The spelling of 11421443211 in words is "eleven billion, four hundred twenty-one million, four hundred forty-three thousand, two hundred eleven".