10001221332 has 24 divisors (see below), whose sum is σ = 23337854400. Its totient is φ = 3333501696.

The previous prime is 10001221327. The next prime is 10001221343. The reversal of 10001221332 is 23312210001.

It is a super-3 number, since 3×10001221332³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 248644 + ... + 286052.

It is an arithmetic number, because the mean of its divisors is an integer number (972410600).

Almost surely, 2^10001221332 is an apocalyptic number.

10001221332 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

10001221332 is an abundant number, since it is smaller than the sum of its proper divisors (13336633068).

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

10001221332 is a wasteful number, since it uses less digits than its factorization.

10001221332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59695 (or 59693 counting only the distinct ones).

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

Adding to 10001221332 its reverse (23312210001), we get a palindrome (33313431333).

The spelling of 10001221332 in words is "ten billion, one million, two hundred twenty-one thousand, three hundred thirty-two".