1220413404443 has 2 divisors, whose sum is σ = 1220413404444. Its totient is φ = 1220413404442.

The previous prime is 1220413404347. The next prime is 1220413404449. The reversal of 1220413404443 is 3444043140221.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1220413404443 is a prime.

It is not a weakly prime, because it can be changed into another prime (1220413404449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610206702221 + 610206702222.

It is an arithmetic number, because the mean of its divisors is an integer number (610206702222).

Almost surely, 2^{1220413404443} is an apocalyptic number.

1220413404443 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220413404443 is an equidigital number, since it uses as much as digits as its factorization.

1220413404443 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36864, while the sum is 32.

Adding to 1220413404443 its reverse (3444043140221), we get a palindrome (4664456544664).

The spelling of 1220413404443 in words is "one trillion, two hundred twenty billion, four hundred thirteen million, four hundred four thousand, four hundred forty-three".