1232211143 has 4 divisors (see below), whose sum is σ = 1233465648. Its totient is φ = 1230956640.

The previous prime is 1232211109. The next prime is 1232211191. The reversal of 1232211143 is 3411122321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1232211143 - 2¹⁴ = 1232194759 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 (1232211193) 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, 625778 + ... + 627743.

It is an arithmetic number, because the mean of its divisors is an integer number (308366412).

Almost surely, 2^1232211143 is an apocalyptic number.

1232211143 is a deficient number, since it is larger than the sum of its proper divisors (1254505).

1232211143 is an equidigital number, since it uses as much as digits as its factorization.

1232211143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1254504.

The product of its digits is 288, while the sum is 20.

The square root of 1232211143 is about 35102.8651679603. The cubic root of 1232211143 is about 1072.0829205439.

Adding to 1232211143 its reverse (3411122321), we get a palindrome (4643333464).

The spelling of 1232211143 in words is "one billion, two hundred thirty-two million, two hundred eleven thousand, one hundred forty-three".