1222421232 has 80 divisors (see below), whose sum is σ = 3245104800. Its totient is φ = 396288000.

The previous prime is 1222421197. The next prime is 1222421279. The reversal of 1222421232 is 2321242221.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 1222421199 and 1222421208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 788394 + ... + 789942.

It is an arithmetic number, because the mean of its divisors is an integer number (40563810).

Almost surely, 2^1222421232 is an apocalyptic number.

1222421232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1222421232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1622552400).

1222421232 is an abundant number, since it is smaller than the sum of its proper divisors (2022683568).

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

1222421232 is a wasteful number, since it uses less digits than its factorization.

1222421232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2002 (or 1996 counting only the distinct ones).

The product of its digits is 768, while the sum is 21.

The square root of 1222421232 is about 34963.1410488245. The cubic root of 1222421232 is about 1069.2361369124.

Adding to 1222421232 its reverse (2321242221), we get a palindrome (3543663453).

The spelling of 1222421232 in words is "one billion, two hundred twenty-two million, four hundred twenty-one thousand, two hundred thirty-two".