2241771421 has 4 divisors (see below), whose sum is σ = 2249422812. Its totient is φ = 2234120032.

The previous prime is 2241771407. The next prime is 2241771451. The reversal of 2241771421 is 1241771422.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1241771422 = 2 ⋅620885711.

It can be written as a sum of positive squares in 2 ways, for example, as 1830898521 + 410872900 = 42789^2 + 20270^2 .

It is a cyclic number.

It is not a de Polignac number, because 2241771421 - 2¹³ = 2241763229 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 (2241771401) 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, 3825256 + ... + 3825841.

It is an arithmetic number, because the mean of its divisors is an integer number (562355703).

Almost surely, 2^2241771421 is an apocalyptic number.

It is an amenable number.

2241771421 is a deficient number, since it is larger than the sum of its proper divisors (7651391).

2241771421 is an equidigital number, since it uses as much as digits as its factorization.

2241771421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7651390.

The product of its digits is 6272, while the sum is 31.

The square root of 2241771421 is about 47347.3486163692. The cubic root of 2241771421 is about 1308.7713400746.

Subtracting from 2241771421 its reverse (1241771422), we obtain a palindrome (999999999).

The spelling of 2241771421 in words is "two billion, two hundred forty-one million, seven hundred seventy-one thousand, four hundred twenty-one".