201123399 has 16 divisors (see below), whose sum is σ = 271331424. Its totient is φ = 132508800.

The previous prime is 201123397. The next prime is 201123401. The reversal of 201123399 is 993321102.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (201123397) and next prime (201123401).

It is not a de Polignac number, because 201123399 - 2¹ = 201123397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201123397) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92869 + ... + 95009.

It is an arithmetic number, because the mean of its divisors is an integer number (16958214).

Almost surely, 2^201123399 is an apocalyptic number.

201123399 is a deficient number, since it is larger than the sum of its proper divisors (70208025).

201123399 is a wasteful number, since it uses less digits than its factorization.

201123399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2498.

The product of its (nonzero) digits is 2916, while the sum is 30.

The square root of 201123399 is about 14181.7981582026. The cubic root of 201123399 is about 585.8964501148.

The spelling of 201123399 in words is "two hundred one million, one hundred twenty-three thousand, three hundred ninety-nine".