221682142227 has 64 divisors (see below), whose sum is σ = 365565312000. Its totient is φ = 116360437248.

The previous prime is 221682142223. The next prime is 221682142247. The reversal of 221682142227 is 722241286122.

It is not a de Polignac number, because 221682142227 - 2² = 221682142223 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (221682142223) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 107143549 + ... + 107145617.

It is an arithmetic number, because the mean of its divisors is an integer number (5711958000).

Almost surely, 2^221682142227 is an apocalyptic number.

221682142227 is a deficient number, since it is larger than the sum of its proper divisors (143883169773).

221682142227 is a wasteful number, since it uses less digits than its factorization.

221682142227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3820.

The product of its digits is 86016, while the sum is 39.

The spelling of 221682142227 in words is "two hundred twenty-one billion, six hundred eighty-two million, one hundred forty-two thousand, two hundred twenty-seven".