1222401432 has 96 divisors (see below), whose sum is σ = 3562272000. Its totient is φ = 348538176.

The previous prime is 1222401421. The next prime is 1222401437. The reversal of 1222401432 is 2341042221.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 1222401399 and 1222401408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222401437) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 873069 + ... + 874467.

It is an arithmetic number, because the mean of its divisors is an integer number (37107000).

Almost surely, 2^1222401432 is an apocalyptic number.

1222401432 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 1222401432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1781136000).

1222401432 is an abundant number, since it is smaller than the sum of its proper divisors (2339870568).

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

1222401432 is a wasteful number, since it uses less digits than its factorization.

1222401432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2165 (or 2154 counting only the distinct ones).

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

The square root of 1222401432 is about 34962.8578923406. The cubic root of 1222401432 is about 1069.2303639461.

Adding to 1222401432 its reverse (2341042221), we get a palindrome (3563443653).

The spelling of 1222401432 in words is "one billion, two hundred twenty-two million, four hundred one thousand, four hundred thirty-two".