432145221021 has 6 divisors (see below), whose sum is σ = 624209763710. Its totient is φ = 288096814008.

The previous prime is 432145221017. The next prime is 432145221047. The reversal of 432145221021 is 120122541234.

432145221021 is a `hidden beast` number, since 4 + 32 + 1 + 4 + 522 + 102 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 307808588025 + 124336632996 = 554805^2 + 352614^2 .

It is not a de Polignac number, because 432145221021 - 2² = 432145221017 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (432145221421) 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, 24008067826 + ... + 24008067843.

Almost surely, 2^432145221021 is an apocalyptic number.

It is an amenable number.

432145221021 is a deficient number, since it is larger than the sum of its proper divisors (192064542689).

432145221021 is a wasteful number, since it uses less digits than its factorization.

432145221021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48016135675 (or 48016135672 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

Adding to 432145221021 its reverse (120122541234), we get a palindrome (552267762255).

The spelling of 432145221021 in words is "four hundred thirty-two billion, one hundred forty-five million, two hundred twenty-one thousand, twenty-one".