2115100221 has 8 divisors (see below), whose sum is σ = 3037067040. Its totient is φ = 1301600112.

The previous prime is 2115100199. The next prime is 2115100243. The reversal of 2115100221 is 1220015112.

It is an interprime number because it is at equal distance from previous prime (2115100199) and next prime (2115100243).

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

It is not a de Polignac number, because 2115100221 - 2⁷ = 2115100093 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2115100221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2115101221) 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 7 ways as a sum of consecutive naturals, for example, 27116631 + ... + 27116708.

It is an arithmetic number, because the mean of its divisors is an integer number (379633380).

Almost surely, 2^2115100221 is an apocalyptic number.

It is an amenable number.

2115100221 is a deficient number, since it is larger than the sum of its proper divisors (921966819).

2115100221 is a wasteful number, since it uses less digits than its factorization.

2115100221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54233355.

The product of its (nonzero) digits is 40, while the sum is 15.

The square root of 2115100221 is about 45990.2187535567. The cubic root of 2115100221 is about 1283.6412069728.

Adding to 2115100221 its reverse (1220015112), we get a palindrome (3335115333).

The spelling of 2115100221 in words is "two billion, one hundred fifteen million, one hundred thousand, two hundred twenty-one".