6217517742121 has 4 divisors (see below), whose sum is σ = 7105734562432. Its totient is φ = 5329300921812.

The previous prime is 6217517742113. The next prime is 6217517742131. The reversal of 6217517742121 is 1212477157126.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 6217517742121 - 2³ = 6217517742113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6217517742101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 444108410145 + ... + 444108410158.

It is an arithmetic number, because the mean of its divisors is an integer number (1776433640608).

Almost surely, 2^{6217517742121} is an apocalyptic number.

It is an amenable number.

6217517742121 is a deficient number, since it is larger than the sum of its proper divisors (888216820311).

6217517742121 is an equidigital number, since it uses as much as digits as its factorization.

6217517742121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 888216820310.

The product of its digits is 329280, while the sum is 46.

The spelling of 6217517742121 in words is "six trillion, two hundred seventeen billion, five hundred seventeen million, seven hundred forty-two thousand, one hundred twenty-one".