1221103032 has 16 divisors (see below), whose sum is σ = 3052757640. Its totient is φ = 407034336.

The previous prime is 1221103031. The next prime is 1221103043. The reversal of 1221103032 is 2303011221.

It is a super-3 number, since 3×1221103032³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1221103031) by changing a digit.

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, 25439623 + ... + 25439670.

Almost surely, 2^1221103032 is an apocalyptic number.

1221103032 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1221103032 is an abundant number, since it is smaller than the sum of its proper divisors (1831654608).

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

1221103032 is a wasteful number, since it uses less digits than its factorization.

1221103032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50879302 (or 50879298 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1221103032 is about 34944.2846829063. The cubic root of 1221103032 is about 1068.8516611479.

Adding to 1221103032 its reverse (2303011221), we get a palindrome (3524114253).

The spelling of 1221103032 in words is "one billion, two hundred twenty-one million, one hundred three thousand, thirty-two".