20122122132 has 144 divisors (see below), whose sum is σ = 58944412800. Its totient is φ = 5669164800.

The previous prime is 20122122113. The next prime is 20122122133. The reversal of 20122122132 is 23122122102.

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 (20122122133) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6845119 + ... + 6848057.

It is an arithmetic number, because the mean of its divisors is an integer number (409336200).

Almost surely, 2^20122122132 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 20122122132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29472206400).

20122122132 is an abundant number, since it is smaller than the sum of its proper divisors (38822290668).

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

20122122132 is a wasteful number, since it uses less digits than its factorization.

20122122132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3326 (or 3321 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 20122122132 its reverse (23122122102), we get a palindrome (43244244234).

The spelling of 20122122132 in words is "twenty billion, one hundred twenty-two million, one hundred twenty-two thousand, one hundred thirty-two".