221084427875 has 8 divisors (see below), whose sum is σ = 275913366144. Its totient is φ = 176867542200.

The previous prime is 221084427841. The next prime is 221084427877. The reversal of 221084427875 is 578724480122.

It is a de Polignac number, because none of the positive numbers 2^k-221084427875 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221084427877) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 884337587 + ... + 884337836.

It is an arithmetic number, because the mean of its divisors is an integer number (34489170768).

Almost surely, 2^221084427875 is an apocalyptic number.

221084427875 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

221084427875 is a deficient number, since it is larger than the sum of its proper divisors (54828938269).

221084427875 is an equidigital number, since it uses as much as digits as its factorization.

221084427875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1768675438 (or 1768675428 counting only the distinct ones).

The product of its (nonzero) digits is 2007040, while the sum is 50.

The spelling of 221084427875 in words is "two hundred twenty-one billion, eighty-four million, four hundred twenty-seven thousand, eight hundred seventy-five".