201124424021 has 8 divisors (see below), whose sum is σ = 203413656600. Its totient is φ = 198835845120.

The previous prime is 201124423963. The next prime is 201124424069. The reversal of 201124424021 is 120424421102.

It can be written as a sum of positive squares in 4 ways, for example, as 8205823396 + 192918600625 = 90586^2 + 439225^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 201124424021 - 2⁶ = 201124423957 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 (201124424521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 469301 + ... + 788981.

It is an arithmetic number, because the mean of its divisors is an integer number (25426707075).

Almost surely, 2^201124424021 is an apocalyptic number.

It is an amenable number.

201124424021 is a deficient number, since it is larger than the sum of its proper divisors (2289232579).

201124424021 is an equidigital number, since it uses as much as digits as its factorization.

201124424021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326839.

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 201124424021 its reverse (120424421102), we get a palindrome (321548845123).

The spelling of 201124424021 in words is "two hundred one billion, one hundred twenty-four million, four hundred twenty-four thousand, twenty-one".