170621272112 has 80 divisors (see below), whose sum is σ = 338471253120. Its totient is φ = 83295765504.

The previous prime is 170621272109. The next prime is 170621272127. The reversal of 170621272112 is 211272126071.

It is a super-2 number, since 2×170621272112² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97664423 + ... + 97666169.

It is an arithmetic number, because the mean of its divisors is an integer number (4230890664).

Almost surely, 2^170621272112 is an apocalyptic number.

It is an amenable number.

170621272112 is a deficient number, since it is larger than the sum of its proper divisors (167849981008).

170621272112 is a wasteful number, since it uses less digits than its factorization.

170621272112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2458 (or 2452 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 32.

Adding to 170621272112 its reverse (211272126071), we get a palindrome (381893398183).

The spelling of 170621272112 in words is "one hundred seventy billion, six hundred twenty-one million, two hundred seventy-two thousand, one hundred twelve".