201452121 has 24 divisors (see below), whose sum is σ = 314428296. Its totient is φ = 123552000.

The previous prime is 201452107. The next prime is 201452143. The reversal of 201452121 is 121254102.

201452121 is a `hidden beast` number, since 201 + 452 + 12 + 1 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 5760000 + 195692121 = 2400^2 + 13989^2 .

It is not a de Polignac number, because 201452121 - 2¹⁷ = 201321049 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 201452094 and 201452103.

It is not an unprimeable number, because it can be changed into a prime (201452171) 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, 33871 + ... + 39371.

It is an arithmetic number, because the mean of its divisors is an integer number (13101179).

Almost surely, 2^201452121 is an apocalyptic number.

It is an amenable number.

201452121 is a deficient number, since it is larger than the sum of its proper divisors (112976175).

201452121 is a wasteful number, since it uses less digits than its factorization.

201452121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5833 (or 5830 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 201452121 is about 14193.3830005394. The cubic root of 201452121 is about 586.2154784994.

The spelling of 201452121 in words is "two hundred one million, four hundred fifty-two thousand, one hundred twenty-one".