201321125 has 8 divisors (see below), whose sum is σ = 251248920. Its totient is φ = 161056800.

The previous prime is 201321101. The next prime is 201321149. The reversal of 201321125 is 521123102.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (201321101) and next prime (201321149).

It can be written as a sum of positive squares in 4 ways, for example, as 4592449 + 196728676 = 2143^2 + 14026^2 .

It is not a de Polignac number, because 201321125 - 2⁸ = 201320869 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 805160 + ... + 805409.

It is an arithmetic number, because the mean of its divisors is an integer number (31406115).

Almost surely, 2^201321125 is an apocalyptic number.

201321125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

201321125 is a deficient number, since it is larger than the sum of its proper divisors (49927795).

201321125 is an equidigital number, since it uses as much as digits as its factorization.

201321125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1610584 (or 1610574 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 201321125 is about 14188.7675645209. The cubic root of 201321125 is about 586.0883870375.

Adding to 201321125 its reverse (521123102), we get a palindrome (722444227).

The spelling of 201321125 in words is "two hundred one million, three hundred twenty-one thousand, one hundred twenty-five".