1222021022211 has 48 divisors (see below), whose sum is σ = 1943974232928. Its totient is φ = 739683764160.

The previous prime is 1222021022179. The next prime is 1222021022237. The reversal of 1222021022211 is 1122201202221.

It is a happy number.

1222021022211 is a `hidden beast` number, since 1 + 2 + 220 + 210 + 22 + 211 = 666.

It is not a de Polignac number, because 1222021022211 - 2⁵ = 1222021022179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1222021022281) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9483265 + ... + 9611261.

It is an arithmetic number, because the mean of its divisors is an integer number (40499463186).

Almost surely, 2^{1222021022211} is an apocalyptic number.

1222021022211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1222021022211 is a deficient number, since it is larger than the sum of its proper divisors (721953210717).

1222021022211 is a wasteful number, since it uses less digits than its factorization.

1222021022211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128833 (or 128808 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 1222021022211 its reverse (1122201202221), we get a palindrome (2344222224432).

The spelling of 1222021022211 in words is "one trillion, two hundred twenty-two billion, twenty-one million, twenty-two thousand, two hundred eleven".