202121143432 has 16 divisors (see below), whose sum is σ = 408129232140. Its totient is φ = 93286681536.

The previous prime is 202121143363. The next prime is 202121143447. The reversal of 202121143432 is 234341121202.

It can be written as a sum of positive squares in 2 ways, for example, as 197905757956 + 4215385476 = 444866^2 + 64926^2 .

It is a junction number, because it is equal to n+sod(n) for n = 202121143397 and 202121143406.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 971736163 + ... + 971736370.

Almost surely, 2^202121143432 is an apocalyptic number.

It is an amenable number.

202121143432 is an abundant number, since it is smaller than the sum of its proper divisors (206008088708).

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

202121143432 is a wasteful number, since it uses less digits than its factorization.

202121143432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1943472552 (or 1943472548 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 202121143432 its reverse (234341121202), we get a palindrome (436462264634).

The spelling of 202121143432 in words is "two hundred two billion, one hundred twenty-one million, one hundred forty-three thousand, four hundred thirty-two".