621217112117 has 8 divisors (see below), whose sum is σ = 711132043776. Its totient is φ = 531594587952.

The previous prime is 621217112093. The next prime is 621217112137. The reversal of 621217112117 is 711211712126.

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

It is a cyclic number.

It is not a de Polignac number, because 621217112117 - 2¹⁰ = 621217111093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621217112137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73097318 + ... + 73105815.

It is an arithmetic number, because the mean of its divisors is an integer number (88891505472).

Almost surely, 2^621217112117 is an apocalyptic number.

It is an amenable number.

621217112117 is a deficient number, since it is larger than the sum of its proper divisors (89914931659).

621217112117 is a wasteful number, since it uses less digits than its factorization.

621217112117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146203747.

The product of its digits is 2352, while the sum is 32.

The spelling of 621217112117 in words is "six hundred twenty-one billion, two hundred seventeen million, one hundred twelve thousand, one hundred seventeen".