1220435441 has 2 divisors, whose sum is σ = 1220435442. Its totient is φ = 1220435440.

The previous prime is 1220435413. The next prime is 1220435483. The reversal of 1220435441 is 1445340221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1218289216 + 2146225 = 34904^2 + 1465^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1220435441 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1220435441.

It is not a weakly prime, because it can be changed into another prime (1220437441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610217720 + 610217721.

It is an arithmetic number, because the mean of its divisors is an integer number (610217721).

Almost surely, 2^1220435441 is an apocalyptic number.

It is an amenable number.

1220435441 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220435441 is an equidigital number, since it uses as much as digits as its factorization.

1220435441 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 1220435441 is about 34934.7311568302. The cubic root of 1220435441 is about 1068.6568411623.

Adding to 1220435441 its reverse (1445340221), we get a palindrome (2665775662).

The spelling of 1220435441 in words is "one billion, two hundred twenty million, four hundred thirty-five thousand, four hundred forty-one".