201421234014 has 128 divisors (see below), whose sum is σ = 544772874240. Its totient is φ = 47945174400.

The previous prime is 201421234013. The next prime is 201421234033. The reversal of 201421234014 is 410432124102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201421234013) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 714199 + ... + 955469.

It is an arithmetic number, because the mean of its divisors is an integer number (4256038080).

Almost surely, 2^201421234014 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201421234014, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (272386437120).

201421234014 is an abundant number, since it is smaller than the sum of its proper divisors (343351640226).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201421234014 is a wasteful number, since it uses less digits than its factorization.

201421234014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241446.

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 201421234014 its reverse (410432124102), we get a palindrome (611853358116).

The spelling of 201421234014 in words is "two hundred one billion, four hundred twenty-one million, two hundred thirty-four thousand, fourteen".