221688254847414 has 96 divisors (see below), whose sum is σ = 475497252447840. Its totient is φ = 68884594366464.

The previous prime is 221688254847413. The next prime is 221688254847439. The reversal of 221688254847414 is 414748452886122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221688254847413) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 33298092 + ... + 39397200.

It is an arithmetic number, because the mean of its divisors is an integer number (4953096379665).

Almost surely, 2^{221688254847414} is an apocalyptic number.

221688254847414 is an abundant number, since it is smaller than the sum of its proper divisors (253808997600426).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221688254847414 is a wasteful number, since it uses less digits than its factorization.

221688254847414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6099422 (or 6099403 counting only the distinct ones).

The product of its digits is 220200960, while the sum is 66.

The spelling of 221688254847414 in words is "two hundred twenty-one trillion, six hundred eighty-eight billion, two hundred fifty-four million, eight hundred forty-seven thousand, four hundred fourteen".