201121323 has 24 divisors (see below), whose sum is σ = 292182192. Its totient is φ = 122997888.

The previous prime is 201121309. The next prime is 201121369. The reversal of 201121323 is 323121102.

It is not a de Polignac number, because 201121323 - 2⁶ = 201121259 is a prime.

It is not an unprimeable number, because it can be changed into a prime (201121423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 86565 + ... + 88857.

It is an arithmetic number, because the mean of its divisors is an integer number (12174258).

Almost surely, 2^201121323 is an apocalyptic number.

201121323 is a deficient number, since it is larger than the sum of its proper divisors (91060869).

201121323 is a wasteful number, since it uses less digits than its factorization.

201121323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2495 (or 2482 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 201121323 is about 14181.7249656027. The cubic root of 201121323 is about 585.8944342293.

Adding to 201121323 its reverse (323121102), we get a palindrome (524242425).

The spelling of 201121323 in words is "two hundred one million, one hundred twenty-one thousand, three hundred twenty-three".