2142414221 has 4 divisors (see below), whose sum is σ = 2142609372. Its totient is φ = 2142219072.

The previous prime is 2142414191. The next prime is 2142414223. The reversal of 2142414221 is 1224142412.

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 2025990121 + 116424100 = 45011^2 + 10790^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2142414221 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 (2142414223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80060 + ... + 103413.

It is an arithmetic number, because the mean of its divisors is an integer number (535652343).

Almost surely, 2^2142414221 is an apocalyptic number.

It is an amenable number.

2142414221 is a deficient number, since it is larger than the sum of its proper divisors (195151).

2142414221 is a wasteful number, since it uses less digits than its factorization.

2142414221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195150.

The product of its digits is 1024, while the sum is 23.

The square root of 2142414221 is about 46286.2206385443. The cubic root of 2142414221 is about 1289.1431565310.

Adding to 2142414221 its reverse (1224142412), we get a palindrome (3366556633).

Subtracting from 2142414221 its reverse (1224142412), we obtain a square (918271809 = 30303²).

The spelling of 2142414221 in words is "two billion, one hundred forty-two million, four hundred fourteen thousand, two hundred twenty-one".