20432121130 has 16 divisors (see below), whose sum is σ = 37771813800. Its totient is φ = 7951960512.

The previous prime is 20432121119. The next prime is 20432121163. The reversal of 20432121130 is 3112123402.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 17260967161 + 3171153969 = 131381^2 + 56313^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20432121098 and 20432121107.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 27610605 + ... + 27611344.

Almost surely, 2^20432121130 is an apocalyptic number.

20432121130 is a deficient number, since it is larger than the sum of its proper divisors (17339692670).

20432121130 is a wasteful number, since it uses less digits than its factorization.

20432121130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55221993.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 20432121130 its reverse (3112123402), we get a palindrome (23544244532).

The spelling of 20432121130 in words is "twenty billion, four hundred thirty-two million, one hundred twenty-one thousand, one hundred thirty".