4215121317 has 24 divisors (see below), whose sum is σ = 6804016128. Its totient is φ = 2492308800.

The previous prime is 4215121279. The next prime is 4215121327. The reversal of 4215121317 is 7131215124.

It is not a de Polignac number, because 4215121317 - 2¹⁰ = 4215120293 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4215121327) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 515173 + ... + 523290.

It is an arithmetic number, because the mean of its divisors is an integer number (283500672).

Almost surely, 2^4215121317 is an apocalyptic number.

It is an amenable number.

4215121317 is a deficient number, since it is larger than the sum of its proper divisors (2588894811).

4215121317 is a wasteful number, since it uses less digits than its factorization.

4215121317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1038521 (or 1038518 counting only the distinct ones).

The product of its digits is 1680, while the sum is 27.

The square root of 4215121317 is about 64923.9656598394. The cubic root of 4215121317 is about 1615.3626099362.

The spelling of 4215121317 in words is "four billion, two hundred fifteen million, one hundred twenty-one thousand, three hundred seventeen".