221211140305 has 16 divisors (see below), whose sum is σ = 279450763200. Its totient is φ = 167639060160.

The previous prime is 221211140291. The next prime is 221211140351. The reversal of 221211140305 is 503041112122.

It is not a de Polignac number, because 221211140305 - 2¹⁷ = 221211009233 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 966406 + ... + 1173184.

It is an arithmetic number, because the mean of its divisors is an integer number (17465672700).

Almost surely, 2^221211140305 is an apocalyptic number.

It is an amenable number.

221211140305 is a deficient number, since it is larger than the sum of its proper divisors (58239622895).

221211140305 is a wasteful number, since it uses less digits than its factorization.

221211140305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218064.

The product of its (nonzero) digits is 480, while the sum is 22.

Adding to 221211140305 its reverse (503041112122), we get a palindrome (724252252427).

The spelling of 221211140305 in words is "two hundred twenty-one billion, two hundred eleven million, one hundred forty thousand, three hundred five".