2415042221 has 8 divisors (see below), whose sum is σ = 2459369760. Its totient is φ = 2370827952.

The previous prime is 2415042187. The next prime is 2415042263. The reversal of 2415042221 is 1222405142.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2415042221 is a prime.

It is a super-2 number, since 2×2415042221² = 11664857858425225682, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2415012221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15326 + ... + 71168.

It is an arithmetic number, because the mean of its divisors is an integer number (307421220).

Almost surely, 2^2415042221 is an apocalyptic number.

It is an amenable number.

2415042221 is a deficient number, since it is larger than the sum of its proper divisors (44327539).

2415042221 is an equidigital number, since it uses as much as digits as its factorization.

2415042221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56635.

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 2415042221 is about 49143.0790752879. The cubic root of 2415042221 is about 1341.6572317243.

Adding to 2415042221 its reverse (1222405142), we get a palindrome (3637447363).

The spelling of 2415042221 in words is "two billion, four hundred fifteen million, forty-two thousand, two hundred twenty-one".