2215152321 has 8 divisors (see below), whose sum is σ = 2953882464. Its totient is φ = 1476595200.

The previous prime is 2215152319. The next prime is 2215152341. The reversal of 2215152321 is 1232515122.

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

It is not a de Polignac number, because 2215152321 - 2¹ = 2215152319 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2215152291 and 2215152300.

It is not an unprimeable number, because it can be changed into a prime (2215152341) 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, 9651 + ... + 67256.

It is an arithmetic number, because the mean of its divisors is an integer number (369235308).

Almost surely, 2^2215152321 is an apocalyptic number.

It is an amenable number.

2215152321 is a deficient number, since it is larger than the sum of its proper divisors (738730143).

2215152321 is an equidigital number, since it uses as much as digits as its factorization.

2215152321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86511.

The product of its digits is 1200, while the sum is 24.

The square root of 2215152321 is about 47065.4047151408. The cubic root of 2215152321 is about 1303.5705238231.

Adding to 2215152321 its reverse (1232515122), we get a palindrome (3447667443).

The spelling of 2215152321 in words is "two billion, two hundred fifteen million, one hundred fifty-two thousand, three hundred twenty-one".