2541120221 has 4 divisors (see below), whose sum is σ = 2541289500. Its totient is φ = 2540950944.

The previous prime is 2541120199. The next prime is 2541120269. The reversal of 2541120221 is 1220211452.

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 2305344196 + 235776025 = 48014^2 + 15355^2 .

It is a cyclic number.

It is not a de Polignac number, because 2541120221 - 2¹⁸ = 2540858077 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2541120193 and 2541120202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2541120121) 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, 59666 + ... + 92963.

It is an arithmetic number, because the mean of its divisors is an integer number (635322375).

Almost surely, 2^2541120221 is an apocalyptic number.

It is an amenable number.

2541120221 is a deficient number, since it is larger than the sum of its proper divisors (169279).

2541120221 is a wasteful number, since it uses less digits than its factorization.

2541120221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169278.

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 2541120221 is about 50409.5251019091. The cubic root of 2541120221 is about 1364.6095429071.

Adding to 2541120221 its reverse (1220211452), we get a palindrome (3761331673).

The spelling of 2541120221 in words is "two billion, five hundred forty-one million, one hundred twenty thousand, two hundred twenty-one".