2415061221 has 4 divisors (see below), whose sum is σ = 3220081632. Its totient is φ = 1610040812.

The previous prime is 2415061183. The next prime is 2415061223. The reversal of 2415061221 is 1221605142.

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 2415061221 - 2⁹ = 2415060709 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2415061191 and 2415061200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2415061223) 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, 402510201 + ... + 402510206.

It is an arithmetic number, because the mean of its divisors is an integer number (805020408).

Almost surely, 2^2415061221 is an apocalyptic number.

It is an amenable number.

2415061221 is a deficient number, since it is larger than the sum of its proper divisors (805020411).

2415061221 is an equidigital number, since it uses as much as digits as its factorization.

2415061221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 805020410.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 2415061221 is about 49143.2723879882. The cubic root of 2415061221 is about 1341.6607501473.

Adding to 2415061221 its reverse (1221605142), we get a palindrome (3636666363).

The spelling of 2415061221 in words is "two billion, four hundred fifteen million, sixty-one thousand, two hundred twenty-one".