2150215117 has 2 divisors, whose sum is σ = 2150215118. Its totient is φ = 2150215116.

The previous prime is 2150215037. The next prime is 2150215147. The reversal of 2150215117 is 7115120512.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2146098276 + 4116841 = 46326^2 + 2029^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2150215117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2150215091 and 2150215100.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2150215147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1075107558 + 1075107559.

It is an arithmetic number, because the mean of its divisors is an integer number (1075107559).

Almost surely, 2^2150215117 is an apocalyptic number.

It is an amenable number.

2150215117 is a deficient number, since it is larger than the sum of its proper divisors (1).

2150215117 is an equidigital number, since it uses as much as digits as its factorization.

2150215117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 700, while the sum is 25.

The square root of 2150215117 is about 46370.4120857255. The cubic root of 2150215117 is about 1290.7059247465.

Adding to 2150215117 its reverse (7115120512), we get a palindrome (9265335629).

The spelling of 2150215117 in words is "two billion, one hundred fifty million, two hundred fifteen thousand, one hundred seventeen".