202121143434 has 24 divisors (see below), whose sum is σ = 500490450720. Its totient is φ = 57748898088.

The previous prime is 202121143363. The next prime is 202121143447. The reversal of 202121143434 is 434341121202.

202121143434 is a `hidden beast` number, since 2 + 0 + 212 + 1 + 14 + 3 + 434 = 666.

202121143434 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 202121143398 and 202121143407.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 802067904 + ... + 802068155.

It is an arithmetic number, because the mean of its divisors is an integer number (20853768780).

Almost surely, 2^202121143434 is an apocalyptic number.

202121143434 is an abundant number, since it is smaller than the sum of its proper divisors (298369307286).

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

202121143434 is a wasteful number, since it uses less digits than its factorization.

202121143434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1604136074 (or 1604136071 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 202121143434 its reverse (434341121202), we get a palindrome (636462264636).

The spelling of 202121143434 in words is "two hundred two billion, one hundred twenty-one million, one hundred forty-three thousand, four hundred thirty-four".