201124020421 has 16 divisors (see below), whose sum is σ = 228532003200. Its totient is φ = 175969620288.

The previous prime is 201124020413. The next prime is 201124020491. The reversal of 201124020421 is 124020421102.

201124020421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 201124020421 - 2³ = 201124020413 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201124020401) 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 15 ways as a sum of consecutive naturals, for example, 7922466 + ... + 7947811.

It is an arithmetic number, because the mean of its divisors is an integer number (14283250200).

Almost surely, 2^201124020421 is an apocalyptic number.

It is an amenable number.

201124020421 is a deficient number, since it is larger than the sum of its proper divisors (27407982779).

201124020421 is a wasteful number, since it uses less digits than its factorization.

201124020421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15870348.

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

Adding to 201124020421 its reverse (124020421102), we get a palindrome (325144441523).

The spelling of 201124020421 in words is "two hundred one billion, one hundred twenty-four million, twenty thousand, four hundred twenty-one".