20211123132 has 192 divisors, whose sum is σ = 58438195200. Its totient is φ = 6008048640.

The previous prime is 20211123113. The next prime is 20211123133. The reversal of 20211123132 is 23132111202.

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 (20211123133) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4600657 + ... + 4605047.

It is an arithmetic number, because the mean of its divisors is an integer number (304365600).

Almost surely, 2^20211123132 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 20211123132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29219097600).

20211123132 is an abundant number, since it is smaller than the sum of its proper divisors (38227072068).

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

20211123132 is a wasteful number, since it uses less digits than its factorization.

20211123132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4553 (or 4545 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 20211123132 its reverse (23132111202), we get a palindrome (43343234334).

The spelling of 20211123132 in words is "twenty billion, two hundred eleven million, one hundred twenty-three thousand, one hundred thirty-two".