203122430222121 has 24 divisors (see below), whose sum is σ = 296809266073320. Its totient is φ = 133844645707776.

The previous prime is 203122430222071. The next prime is 203122430222183. The reversal of 203122430222121 is 121222034221302.

203122430222121 is a `hidden beast` number, since 2 + 0 + 3 + 1 + 2 + 2 + 430 + 2 + 221 + 2 + 1 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 82012295172096 + 121110135050025 = 9056064^2 + 11005005^2 .

It is not a de Polignac number, because 203122430222121 - 2¹³ = 203122430213929 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (203122430222021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 150610680 + ... + 151953353.

It is an arithmetic number, because the mean of its divisors is an integer number (12367052753055).

Almost surely, 2^{203122430222121} is an apocalyptic number.

It is an amenable number.

203122430222121 is a deficient number, since it is larger than the sum of its proper divisors (93686835851199).

203122430222121 is a wasteful number, since it uses less digits than its factorization.

203122430222121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302564905 (or 302564902 counting only the distinct ones).

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

Adding to 203122430222121 its reverse (121222034221302), we get a palindrome (324344464443423).

The spelling of 203122430222121 in words is "two hundred three trillion, one hundred twenty-two billion, four hundred thirty million, two hundred twenty-two thousand, one hundred twenty-one".