20122432132 has 18 divisors (see below), whose sum is σ = 38706580094. Its totient is φ = 9146559840.

The previous prime is 20122432123. The next prime is 20122432139. The reversal of 20122432132 is 23123422102.

It can be written as a sum of positive squares in only one way, i.e., 19136848896 + 985583236 = 138336^2 + 31394^2 .

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (20122432139) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 20787153 + ... + 20788120.

Almost surely, 2^20122432132 is an apocalyptic number.

20122432132 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20122432132 is a deficient number, since it is larger than the sum of its proper divisors (18584147962).

20122432132 is a wasteful number, since it uses less digits than its factorization.

20122432132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41575299 (or 41575286 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 20122432132 its reverse (23123422102), we get a palindrome (43245854234).

It can be divided in two parts, 20122 and 432132, that added together give a palindrome (452254).

The spelling of 20122432132 in words is "twenty billion, one hundred twenty-two million, four hundred thirty-two thousand, one hundred thirty-two".