201211212030133 has 4 divisors (see below), whose sum is σ = 201211256270368. Its totient is φ = 201211167789900.

The previous prime is 201211212030077. The next prime is 201211212030139. The reversal of 201211212030133 is 331030212112102.

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 201211212030133 - 2³⁷ = 201073773076661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201211212030139) 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, 14399691 + ... + 24693592.

It is an arithmetic number, because the mean of its divisors is an integer number (50302814067592).

Almost surely, 2^{201211212030133} is an apocalyptic number.

It is an amenable number.

201211212030133 is a deficient number, since it is larger than the sum of its proper divisors (44240235).

201211212030133 is an equidigital number, since it uses as much as digits as its factorization.

201211212030133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44240234.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 201211212030133 its reverse (331030212112102), we get a palindrome (532241424142235).

The spelling of 201211212030133 in words is "two hundred one trillion, two hundred eleven billion, two hundred twelve million, thirty thousand, one hundred thirty-three".