2141204421 has 4 divisors (see below), whose sum is σ = 2854939232. Its totient is φ = 1427469612.

The previous prime is 2141204419. The next prime is 2141204431. The reversal of 2141204421 is 1244021412.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2141204421 - 2¹ = 2141204419 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2141204431) 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, 356867401 + ... + 356867406.

It is an arithmetic number, because the mean of its divisors is an integer number (713734808).

Almost surely, 2^2141204421 is an apocalyptic number.

It is an amenable number.

2141204421 is a deficient number, since it is larger than the sum of its proper divisors (713734811).

2141204421 is an equidigital number, since it uses as much as digits as its factorization.

2141204421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 713734810.

The product of its (nonzero) digits is 512, while the sum is 21.

The square root of 2141204421 is about 46273.1501088914. The cubic root of 2141204421 is about 1288.9004554025.

Adding to 2141204421 its reverse (1244021412), we get a palindrome (3385225833).

The spelling of 2141204421 in words is "two billion, one hundred forty-one million, two hundred four thousand, four hundred twenty-one".