1222101212211 has 12 divisors (see below), whose sum is σ = 1925735243640. Its totient is φ = 740667401280.

The previous prime is 1222101212131. The next prime is 1222101212237. The reversal of 1222101212211 is 1122121012221.

1222101212211 is a `hidden beast` number, since 122 + 210 + 121 + 2 + 211 = 666.

It is not a de Polignac number, because 1222101212211 - 2⁹ = 1222101211699 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1222101212711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6172228246 + ... + 6172228443.

It is an arithmetic number, because the mean of its divisors is an integer number (160477936970).

Almost surely, 2^{1222101212211} is an apocalyptic number.

1222101212211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1222101212211 is a deficient number, since it is larger than the sum of its proper divisors (703634031429).

1222101212211 is a wasteful number, since it uses less digits than its factorization.

1222101212211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12344456706 (or 12344456703 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 1222101212211 its reverse (1122121012221), we get a palindrome (2344222224432).

The spelling of 1222101212211 in words is "one trillion, two hundred twenty-two billion, one hundred one million, two hundred twelve thousand, two hundred eleven".