1223011420 has 12 divisors (see below), whose sum is σ = 2568324024. Its totient is φ = 489204560.

The previous prime is 1223011409. The next prime is 1223011429. The reversal of 1223011420 is 241103221.

It is a junction number, because it is equal to n+sod(n) for n = 1223011394 and 1223011403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223011429) 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, 30575266 + ... + 30575305.

It is an arithmetic number, because the mean of its divisors is an integer number (214027002).

Almost surely, 2^1223011420 is an apocalyptic number.

1223011420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1223011420 is an abundant number, since it is smaller than the sum of its proper divisors (1345312604).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1223011420 is a wasteful number, since it uses less digits than its factorization.

1223011420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61150580 (or 61150578 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1223011420 is about 34971.5801759086. The cubic root of 1223011420 is about 1069.4081858457.

Adding to 1223011420 its reverse (241103221), we get a palindrome (1464114641).

The spelling of 1223011420 in words is "one billion, two hundred twenty-three million, eleven thousand, four hundred twenty".