1222111112211 has 48 divisors (see below), whose sum is σ = 1935611982720. Its totient is φ = 736885330560.

The previous prime is 1222111112197. The next prime is 1222111112267. The reversal of 1222111112211 is 1122111112221.

It is a happy number.

1222111112211 is a `hidden beast` number, since 122 + 211 + 111 + 221 + 1 = 666.

It is not a de Polignac number, because 1222111112211 - 2⁶ = 1222111112147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1222111112281) 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, 32769471 + ... + 32806743.

It is an arithmetic number, because the mean of its divisors is an integer number (40325249640).

Almost surely, 2^{1222111112211} is an apocalyptic number.

1222111112211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1222111112211 is a deficient number, since it is larger than the sum of its proper divisors (713500870509).

1222111112211 is a wasteful number, since it uses less digits than its factorization.

1222111112211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38976 (or 38973 counting only the distinct ones).

The product of its digits is 32, while the sum is 18.

Adding to 1222111112211 its reverse (1122111112221), we get a palindrome (2344222224432).

The spelling of 1222111112211 in words is "one trillion, two hundred twenty-two billion, one hundred eleven million, one hundred twelve thousand, two hundred eleven".