201124022221 has 4 divisors (see below), whose sum is σ = 203669896000. Its totient is φ = 198578148444.

The previous prime is 201124022117. The next prime is 201124022227. The reversal of 201124022221 is 122220421102.

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 201124022221 - 2³⁵ = 166764283853 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 (201124022227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1272936771 + ... + 1272936928.

It is an arithmetic number, because the mean of its divisors is an integer number (50917474000).

Almost surely, 2^201124022221 is an apocalyptic number.

It is an amenable number.

201124022221 is a deficient number, since it is larger than the sum of its proper divisors (2545873779).

201124022221 is an equidigital number, since it uses as much as digits as its factorization.

201124022221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2545873778.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 201124022221 its reverse (122220421102), we get a palindrome (323344443323).

The spelling of 201124022221 in words is "two hundred one billion, one hundred twenty-four million, twenty-two thousand, two hundred twenty-one".