221012011222211 has 24 divisors (see below), whose sum is σ = 259580412796320. Its totient is φ = 187366312615680.

The previous prime is 221012011222201. The next prime is 221012011222229. The reversal of 221012011222211 is 112222110210122.

It is a de Polignac number, because none of the positive numbers 2^k-221012011222211 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221012011222201) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 492637511 + ... + 493085936.

It is an arithmetic number, because the mean of its divisors is an integer number (10815850533180).

Almost surely, 2^{221012011222211} is an apocalyptic number.

221012011222211 is a deficient number, since it is larger than the sum of its proper divisors (38568401574109).

221012011222211 is a wasteful number, since it uses less digits than its factorization.

221012011222211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 985723595 (or 985723584 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 221012011222211 its reverse (112222110210122), we get a palindrome (333234121432333).

The spelling of 221012011222211 in words is "two hundred twenty-one trillion, twelve billion, eleven million, two hundred twenty-two thousand, two hundred eleven".