20123101332 has 72 divisors (see below), whose sum is σ = 52248452256. Its totient is φ = 6527911104.

The previous prime is 20123101291. The next prime is 20123101337. The reversal of 20123101332 is 23310132102.

20123101332 is a `hidden beast` number, since 20 + 1 + 2 + 310 + 1 + 332 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20123101337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 149938 + ... + 250454.

It is an arithmetic number, because the mean of its divisors is an integer number (725672948).

Almost surely, 2^20123101332 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20123101332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26124226128).

20123101332 is an abundant number, since it is smaller than the sum of its proper divisors (32125350924).

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

20123101332 is a wasteful number, since it uses less digits than its factorization.

20123101332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100677 (or 100672 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 20123101332 its reverse (23310132102), we get a palindrome (43433233434).

The spelling of 20123101332 in words is "twenty billion, one hundred twenty-three million, one hundred one thousand, three hundred thirty-two".