201334340421 has 20 divisors (see below), whose sum is σ = 300780697932. Its totient is φ = 134213079168.

The previous prime is 201334340419. The next prime is 201334340477. The reversal of 201334340421 is 124043433102.

201334340421 is a `hidden beast` number, since 201 + 3 + 3 + 4 + 34 + 0 + 421 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 157322496321 + 44011844100 = 396639^2 + 209790^2 .

It is not a de Polignac number, because 201334340421 - 2¹ = 201334340419 is a prime.

It is a super-2 number, since 2×201334340421² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201334340401) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1123231 + ... + 1290083.

Almost surely, 2^201334340421 is an apocalyptic number.

It is an amenable number.

201334340421 is a deficient number, since it is larger than the sum of its proper divisors (99446357511).

201334340421 is a wasteful number, since it uses less digits than its factorization.

201334340421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181762 (or 181753 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 201334340421 its reverse (124043433102), we get a palindrome (325377773523).

The spelling of 201334340421 in words is "two hundred one billion, three hundred thirty-four million, three hundred forty thousand, four hundred twenty-one".