1220344411 has 12 divisors (see below), whose sum is σ = 1444554496. Its totient is φ = 1024063920.

The previous prime is 1220344403. The next prime is 1220344421. The reversal of 1220344411 is 1144430221.

It is a happy number.

It is not a de Polignac number, because 1220344411 - 2³ = 1220344403 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1220344421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 386331 + ... + 389476.

Almost surely, 2^1220344411 is an apocalyptic number.

1220344411 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1220344411 is a deficient number, since it is larger than the sum of its proper divisors (224210085).

1220344411 is a wasteful number, since it uses less digits than its factorization.

1220344411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 775842 (or 775831 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 1220344411 is about 34933.4282743621. The cubic root of 1220344411 is about 1068.6302707958.

Adding to 1220344411 its reverse (1144430221), we get a palindrome (2364774632).

The spelling of 1220344411 in words is "one billion, two hundred twenty million, three hundred forty-four thousand, four hundred eleven".