1211133222211 has 32 divisors (see below), whose sum is σ = 1382126457600. Its totient is φ = 1051201200000.

The previous prime is 1211133222133. The next prime is 1211133222217. The reversal of 1211133222211 is 1122223311121.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1211133222211 - 2⁷ = 1211133222083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1211133222217) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11075181 + ... + 11184001.

It is an arithmetic number, because the mean of its divisors is an integer number (43191451800).

Almost surely, 2^{1211133222211} is an apocalyptic number.

1211133222211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1211133222211 is a deficient number, since it is larger than the sum of its proper divisors (170993235389).

1211133222211 is a wasteful number, since it uses less digits than its factorization.

1211133222211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109251.

The product of its digits is 288, while the sum is 22.

Adding to 1211133222211 its reverse (1122223311121), we get a palindrome (2333356533332).

The spelling of 1211133222211 in words is "one trillion, two hundred eleven billion, one hundred thirty-three million, two hundred twenty-two thousand, two hundred eleven".