7218998127 has 32 divisors (see below), whose sum is σ = 11680312320. Its totient is φ = 4370184000.

The previous prime is 7218998081. The next prime is 7218998131.

7218998127 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 7218998127 - 2¹¹ = 7218996079 is a prime.

It is a super-2 number, since 2×7218998127² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7218998327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 257227 + ... + 283907.

It is an arithmetic number, because the mean of its divisors is an integer number (365009760).

Almost surely, 2^7218998127 is an apocalyptic number.

7218998127 is a deficient number, since it is larger than the sum of its proper divisors (4461314193).

7218998127 is a wasteful number, since it uses less digits than its factorization.

7218998127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27612 (or 27606 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 54.

The square root of 7218998127 is about 84964.6875295849. The cubic root of 7218998127 is about 1932.6756562989.

The spelling of 7218998127 in words is "seven billion, two hundred eighteen million, nine hundred ninety-eight thousand, one hundred twenty-seven".