202123201 has 4 divisors (see below), whose sum is σ = 230997952. Its totient is φ = 173248452.

The previous prime is 202123199. The next prime is 202123223. The reversal of 202123201 is 102321202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 202123201 - 2¹ = 202123199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (202123261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14437365 + ... + 14437378.

It is an arithmetic number, because the mean of its divisors is an integer number (57749488).

Almost surely, 2^202123201 is an apocalyptic number.

It is an amenable number.

202123201 is a deficient number, since it is larger than the sum of its proper divisors (28874751).

202123201 is an equidigital number, since it uses as much as digits as its factorization.

202123201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28874750.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 202123201 is about 14217.0039389458. The cubic root of 202123201 is about 586.8656933125.

Adding to 202123201 its reverse (102321202), we get a palindrome (304444403).

The spelling of 202123201 in words is "two hundred two million, one hundred twenty-three thousand, two hundred one".