201123304421 has 24 divisors (see below), whose sum is σ = 234980256000. Its totient is φ = 171013715712.

The previous prime is 201123304367. The next prime is 201123304471. The reversal of 201123304421 is 124403321102.

It is not a de Polignac number, because 201123304421 - 2⁶ = 201123304357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201123304471) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 392921 + ... + 746078.

It is an arithmetic number, because the mean of its divisors is an integer number (9790844000).

Almost surely, 2^201123304421 is an apocalyptic number.

It is an amenable number.

201123304421 is a deficient number, since it is larger than the sum of its proper divisors (33856951579).

201123304421 is a wasteful number, since it uses less digits than its factorization.

201123304421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1139093 (or 1139076 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 201123304421 its reverse (124403321102), we get a palindrome (325526625523).

The spelling of 201123304421 in words is "two hundred one billion, one hundred twenty-three million, three hundred four thousand, four hundred twenty-one".