1121221432 has 16 divisors (see below), whose sum is σ = 2174783400. Its totient is φ = 541279200.

The previous prime is 1121221373. The next prime is 1121221433. The reversal of 1121221432 is 2341221211.

It is a super-2 number, since 2×1121221432² = 2514274999152261248, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121221433) 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, 2416194 + ... + 2416657.

Almost surely, 2^1121221432 is an apocalyptic number.

It is an amenable number.

1121221432 is a deficient number, since it is larger than the sum of its proper divisors (1053561968).

1121221432 is a wasteful number, since it uses less digits than its factorization.

1121221432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4832886 (or 4832882 counting only the distinct ones).

The product of its digits is 192, while the sum is 19.

The square root of 1121221432 is about 33484.6447196323. The cubic root of 1121221432 is about 1038.8761997927.

Adding to 1121221432 its reverse (2341221211), we get a palindrome (3462442643).

The spelling of 1121221432 in words is "one billion, one hundred twenty-one million, two hundred twenty-one thousand, four hundred thirty-two".