221227717242 has 32 divisors (see below), whose sum is σ = 505717709184. Its totient is φ = 63201124800.

The previous prime is 221227717237. The next prime is 221227717283. The reversal of 221227717242 is 242717722122.

It is a super-2 number, since 2×221227717242² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 221227717242.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 118992 + ... + 675732.

It is an arithmetic number, because the mean of its divisors is an integer number (15803678412).

Almost surely, 2^221227717242 is an apocalyptic number.

221227717242 is an abundant number, since it is smaller than the sum of its proper divisors (284489991942).

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

221227717242 is a wasteful number, since it uses less digits than its factorization.

221227717242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 566214.

The product of its digits is 87808, while the sum is 39.

The spelling of 221227717242 in words is "two hundred twenty-one billion, two hundred twenty-seven million, seven hundred seventeen thousand, two hundred forty-two".