201132021 has 4 divisors (see below), whose sum is σ = 268176032. Its totient is φ = 134088012.

The previous prime is 201132017. The next prime is 201132031. The reversal of 201132021 is 120231102.

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 not a de Polignac number, because 201132021 - 2² = 201132017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201131988 and 201132006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201132011) 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 3 ways as a sum of consecutive naturals, for example, 33522001 + ... + 33522006.

It is an arithmetic number, because the mean of its divisors is an integer number (67044008).

Almost surely, 2^201132021 is an apocalyptic number.

It is an amenable number.

201132021 is a deficient number, since it is larger than the sum of its proper divisors (67044011).

201132021 is an equidigital number, since it uses as much as digits as its factorization.

201132021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67044010.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 201132021 is about 14182.1021361433. The cubic root of 201132021 is about 585.9048222999.

Adding to 201132021 its reverse (120231102), we get a palindrome (321363123).

The spelling of 201132021 in words is "two hundred one million, one hundred thirty-two thousand, twenty-one".