2221843541 has 4 divisors (see below), whose sum is σ = 2253137184. Its totient is φ = 2190549900.

The previous prime is 2221843529. The next prime is 2221843567. The reversal of 2221843541 is 1453481222.

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 a cyclic number.

It is not a de Polignac number, because 2221843541 - 2²² = 2217649237 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2221843498 and 2221843507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221843571) 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, 15646715 + ... + 15646856.

It is an arithmetic number, because the mean of its divisors is an integer number (563284296).

Almost surely, 2^2221843541 is an apocalyptic number.

It is an amenable number.

2221843541 is a deficient number, since it is larger than the sum of its proper divisors (31293643).

2221843541 is an equidigital number, since it uses as much as digits as its factorization.

2221843541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31293642.

The product of its digits is 15360, while the sum is 32.

The square root of 2221843541 is about 47136.4353870761. The cubic root of 2221843541 is about 1304.8817518356.

The spelling of 2221843541 in words is "two billion, two hundred twenty-one million, eight hundred forty-three thousand, five hundred forty-one".