2221421432 has 16 divisors (see below), whose sum is σ = 4166513640. Its totient is φ = 1110351136.

The previous prime is 2221421407. The next prime is 2221421453. The reversal of 2221421432 is 2341241222.

It is a junction number, because it is equal to n+sod(n) for n = 2221421398 and 2221421407.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17723 + ... + 68970.

Almost surely, 2^2221421432 is an apocalyptic number.

It is an amenable number.

2221421432 is a deficient number, since it is larger than the sum of its proper divisors (1945092208).

2221421432 is a wasteful number, since it uses less digits than its factorization.

2221421432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89902 (or 89898 counting only the distinct ones).

The product of its digits is 1536, while the sum is 23.

The square root of 2221421432 is about 47131.9576508339. The cubic root of 2221421432 is about 1304.7991121709.

Adding to 2221421432 its reverse (2341241222), we get a palindrome (4562662654).

The spelling of 2221421432 in words is "two billion, two hundred twenty-one million, four hundred twenty-one thousand, four hundred thirty-two".