1220423113 has 8 divisors (see below), whose sum is σ = 1502059328. Its totient is φ = 965609424.

The previous prime is 1220423111. The next prime is 1220423123. The reversal of 1220423113 is 3113240221.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1220423113 - 2¹ = 1220423111 is a prime.

It is a super-2 number, since 2×1220423113² = 2978865149489221538, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1220423111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6705531 + ... + 6705712.

It is an arithmetic number, because the mean of its divisors is an integer number (187757416).

Almost surely, 2^1220423113 is an apocalyptic number.

1220423113 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1220423113 is a deficient number, since it is larger than the sum of its proper divisors (281636215).

1220423113 is a wasteful number, since it uses less digits than its factorization.

1220423113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13411263.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1220423113 is about 34934.5547130631. The cubic root of 1220423113 is about 1068.6532428713.

Adding to 1220423113 its reverse (3113240221), we get a palindrome (4333663334).

The spelling of 1220423113 in words is "one billion, two hundred twenty million, four hundred twenty-three thousand, one hundred thirteen".