1221432032032 has 48 divisors (see below), whose sum is σ = 2410671375000. Its totient is φ = 609199718400.

The previous prime is 1221432031979. The next prime is 1221432032039. The reversal of 1221432032032 is 2302302341221.

It can be written as a sum of positive squares in 4 ways, for example, as 1188614535696 + 32817496336 = 1090236^2 + 181156^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1221432031988 and 1221432032006.

It is not an unprimeable number, because it can be changed into a prime (1221432032039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23995344 + ... + 24046192.

Almost surely, 2^{1221432032032} is an apocalyptic number.

It is an amenable number.

1221432032032 is a deficient number, since it is larger than the sum of its proper divisors (1189239342968).

1221432032032 is a wasteful number, since it uses less digits than its factorization.

1221432032032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52709 (or 52701 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 1221432032032 its reverse (2302302341221), we get a palindrome (3523734373253).

The spelling of 1221432032032 in words is "one trillion, two hundred twenty-one billion, four hundred thirty-two million, thirty-two thousand, thirty-two".