201040324421 has 4 divisors (see below), whose sum is σ = 201053499372. Its totient is φ = 201027149472.

The previous prime is 201040324411. The next prime is 201040324423. The reversal of 201040324421 is 124423040102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 52537224100 + 148503100321 = 229210^2 + 385361^2 .

It is a cyclic number.

It is not a de Polignac number, because 201040324421 - 2²² = 201036130117 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 (201040324423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6564560 + ... + 6595113.

It is an arithmetic number, because the mean of its divisors is an integer number (50263374843).

Almost surely, 2^201040324421 is an apocalyptic number.

It is an amenable number.

201040324421 is a deficient number, since it is larger than the sum of its proper divisors (13174951).

201040324421 is a wasteful number, since it uses less digits than its factorization.

201040324421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13174950.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 201040324421 its reverse (124423040102), we get a palindrome (325463364523).

The spelling of 201040324421 in words is "two hundred one billion, forty million, three hundred twenty-four thousand, four hundred twenty-one".