20021100332 has 12 divisors (see below), whose sum is σ = 35045654280. Its totient is φ = 10008056256.

The previous prime is 20021100317. The next prime is 20021100353. The reversal of 20021100332 is 23300112002.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 605357 + ... + 637572.

It is an arithmetic number, because the mean of its divisors is an integer number (2920471190).

Almost surely, 2^20021100332 is an apocalyptic number.

It is an amenable number.

20021100332 is a deficient number, since it is larger than the sum of its proper divisors (15024553948).

20021100332 is a wasteful number, since it uses less digits than its factorization.

20021100332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1246960 (or 1246958 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 20021100332 its reverse (23300112002), we get a palindrome (43321212334).

The spelling of 20021100332 in words is "twenty billion, twenty-one million, one hundred thousand, three hundred thirty-two".