20001121332 has 48 divisors (see below), whose sum is σ = 47386160640. Its totient is φ = 6565354848.

The previous prime is 20001121313. The next prime is 20001121337. The reversal of 20001121332 is 23312110002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20001121337) 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 15 ways as a sum of consecutive naturals, for example, 176043 + ... + 266445.

It is an arithmetic number, because the mean of its divisors is an integer number (987211680).

Almost surely, 2^20001121332 is an apocalyptic number.

It is an amenable number.

20001121332 is an abundant number, since it is smaller than the sum of its proper divisors (27385039308).

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

20001121332 is a wasteful number, since it uses less digits than its factorization.

20001121332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90692 (or 90690 counting only the distinct ones).

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

Adding to 20001121332 its reverse (23312110002), we get a palindrome (43313231334).

The spelling of 20001121332 in words is "twenty billion, one million, one hundred twenty-one thousand, three hundred thirty-two".