201000402434221 has 16 divisors (see below), whose sum is σ = 229483659801088. Its totient is φ = 174700906401600.

The previous prime is 201000402434213. The next prime is 201000402434233. The reversal of 201000402434221 is 122434204000102.

It is a cyclic number.

It is not a de Polignac number, because 201000402434221 - 2³ = 201000402434213 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 (201000402434291) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6739989195 + ... + 6740019016.

It is an arithmetic number, because the mean of its divisors is an integer number (14342728737568).

Almost surely, 2^{201000402434221} is an apocalyptic number.

It is an amenable number.

201000402434221 is a deficient number, since it is larger than the sum of its proper divisors (28483257366867).

201000402434221 is a wasteful number, since it uses less digits than its factorization.

201000402434221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13480008292.

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 201000402434221 its reverse (122434204000102), we get a palindrome (323434606434323).

The spelling of 201000402434221 in words is "two hundred one trillion, four hundred two million, four hundred thirty-four thousand, two hundred twenty-one".