20303432121420 has 180 divisors, whose sum is σ = 74091413697840. Its totient is φ = 4640784466752.

The previous prime is 20303432121403. The next prime is 20303432121421. The reversal of 20303432121420 is 2412123430302.

20303432121420 is a `hidden beast` number, since 2 + 0 + 303 + 4 + 3 + 212 + 142 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (180).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (20303432121421) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 127808200 + ... + 127966959.

It is an arithmetic number, because the mean of its divisors is an integer number (411618964988).

Almost surely, 2^{20303432121420} is an apocalyptic number.

20303432121420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20303432121420 is an abundant number, since it is smaller than the sum of its proper divisors (53787981576420).

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

20303432121420 is a wasteful number, since it uses less digits than its factorization.

20303432121420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255775194 (or 255775176 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 20303432121420 its reverse (2412123430302), we get a palindrome (22715555551722).

The spelling of 20303432121420 in words is "twenty trillion, three hundred three billion, four hundred thirty-two million, one hundred twenty-one thousand, four hundred twenty".