17215211512 has 32 divisors (see below), whose sum is σ = 33037139520. Its totient is φ = 8406106240.

The previous prime is 17215211501. The next prime is 17215211567. The reversal of 17215211512 is 21511251271.

It is a super-2 number, since 2×17215211512² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123678 + ... + 222994.

It is an arithmetic number, because the mean of its divisors is an integer number (1032410610).

Almost surely, 2^17215211512 is an apocalyptic number.

It is an amenable number.

17215211512 is a deficient number, since it is larger than the sum of its proper divisors (15821928008).

17215211512 is a wasteful number, since it uses less digits than its factorization.

17215211512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99831 (or 99827 counting only the distinct ones).

The product of its digits is 1400, while the sum is 28.

Adding to 17215211512 its reverse (21511251271), we get a palindrome (38726462783).

The spelling of 17215211512 in words is "seventeen billion, two hundred fifteen million, two hundred eleven thousand, five hundred twelve".