221130133215 has 32 divisors (see below), whose sum is σ = 378482569920. Its totient is φ = 109854326784.

The previous prime is 221130133207. The next prime is 221130133223. The reversal of 221130133215 is 512331031122.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (221130133207) and next prime (221130133223).

It is not a de Polignac number, because 221130133215 - 2³ = 221130133207 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4445250 + ... + 4494719.

It is an arithmetic number, because the mean of its divisors is an integer number (11827580310).

Almost surely, 2^221130133215 is an apocalyptic number.

221130133215 is a deficient number, since it is larger than the sum of its proper divisors (157352436705).

221130133215 is a wasteful number, since it uses less digits than its factorization.

221130133215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8940091.

The product of its (nonzero) digits is 1080, while the sum is 24.

Adding to 221130133215 its reverse (512331031122), we get a palindrome (733461164337).

The spelling of 221130133215 in words is "two hundred twenty-one billion, one hundred thirty million, one hundred thirty-three thousand, two hundred fifteen".