20132404021 has 8 divisors (see below), whose sum is σ = 20290515840. Its totient is φ = 19974482112.

The previous prime is 20132403959. The next prime is 20132404027. The reversal of 20132404021 is 12040423102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20132404021 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20132404021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20132404027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 169236 + ... + 262498.

It is an arithmetic number, because the mean of its divisors is an integer number (2536314480).

Almost surely, 2^20132404021 is an apocalyptic number.

It is an amenable number.

20132404021 is a deficient number, since it is larger than the sum of its proper divisors (158111819).

20132404021 is a wasteful number, since it uses less digits than its factorization.

20132404021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94955.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 20132404021 its reverse (12040423102), we get a palindrome (32172827123).

The spelling of 20132404021 in words is "twenty billion, one hundred thirty-two million, four hundred four thousand, twenty-one".