1224211143 has 8 divisors (see below), whose sum is σ = 1635855088. Its totient is φ = 814353984.

The previous prime is 1224211129. The next prime is 1224211147. The reversal of 1224211143 is 3411124221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1224211143 - 2⁴ = 1224211127 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 (1224211147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 445096 + ... + 447837.

It is an arithmetic number, because the mean of its divisors is an integer number (204481886).

Almost surely, 2^1224211143 is an apocalyptic number.

1224211143 is a deficient number, since it is larger than the sum of its proper divisors (411643945).

1224211143 is an equidigital number, since it uses as much as digits as its factorization.

1224211143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 893393.

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

The square root of 1224211143 is about 34988.7287994291. The cubic root of 1224211143 is about 1069.7577531196.

Adding to 1224211143 its reverse (3411124221), we get a palindrome (4635335364).

The spelling of 1224211143 in words is "one billion, two hundred twenty-four million, two hundred eleven thousand, one hundred forty-three".