201420113144221 has 4 divisors (see below), whose sum is σ = 201422441544700. Its totient is φ = 201417784743744.

The previous prime is 201420113144191. The next prime is 201420113144231. The reversal of 201420113144221 is 122441311024102.

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 70669006868196 + 130751106276025 = 8406486^2 + 11434645^2 .

It is a cyclic number.

It is not a de Polignac number, because 201420113144221 - 2¹⁵ = 201420113111453 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 201420113144221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201420113144231) 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, 1164070476 + ... + 1164243493.

It is an arithmetic number, because the mean of its divisors is an integer number (50355610386175).

Almost surely, 2^{201420113144221} is an apocalyptic number.

It is an amenable number.

201420113144221 is a deficient number, since it is larger than the sum of its proper divisors (2328400479).

201420113144221 is an equidigital number, since it uses as much as digits as its factorization.

201420113144221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2328400478.

The product of its (nonzero) digits is 3072, while the sum is 28.

Adding to 201420113144221 its reverse (122441311024102), we get a palindrome (323861424168323).

The spelling of 201420113144221 in words is "two hundred one trillion, four hundred twenty billion, one hundred thirteen million, one hundred forty-four thousand, two hundred twenty-one".