215221042041 has 8 divisors (see below), whose sum is σ = 287104663200. Its totient is φ = 143409057792.

The previous prime is 215221042031. The next prime is 215221042051. The reversal of 215221042041 is 140240122512.

It is an interprime number because it is at equal distance from previous prime (215221042031) and next prime (215221042051).

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

It is not a de Polignac number, because 215221042041 - 2⁵ = 215221042009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (215221042021) 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, 17902216 + ... + 17914233.

It is an arithmetic number, because the mean of its divisors is an integer number (35888082900).

Almost surely, 2^215221042041 is an apocalyptic number.

It is an amenable number.

215221042041 is a deficient number, since it is larger than the sum of its proper divisors (71883621159).

215221042041 is a wasteful number, since it uses less digits than its factorization.

215221042041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35818455.

The product of its (nonzero) digits is 1280, while the sum is 24.

Adding to 215221042041 its reverse (140240122512), we get a palindrome (355461164553).

The spelling of 215221042041 in words is "two hundred fifteen billion, two hundred twenty-one million, forty-two thousand, forty-one".