1220220134143 has 4 divisors (see below), whose sum is σ = 1220304668920. Its totient is φ = 1220135599368.

The previous prime is 1220220134131. The next prime is 1220220134197. The reversal of 1220220134143 is 3414310220221.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1220220134143 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 (1220220134113) 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, 42245733 + ... + 42274606.

It is an arithmetic number, because the mean of its divisors is an integer number (305076167230).

Almost surely, 2^{1220220134143} is an apocalyptic number.

1220220134143 is a deficient number, since it is larger than the sum of its proper divisors (84534777).

1220220134143 is an equidigital number, since it uses as much as digits as its factorization.

1220220134143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84534776.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 1220220134143 its reverse (3414310220221), we get a palindrome (4634530354364).

The spelling of 1220220134143 in words is "one trillion, two hundred twenty billion, two hundred twenty million, one hundred thirty-four thousand, one hundred forty-three".