1211122222244 has 36 divisors (see below), whose sum is σ = 2331543120732. Its totient is φ = 550064792640.

The previous prime is 1211122222201. The next prime is 1211122222301. The reversal of 1211122222244 is 4422222211121.

It can be written as a sum of positive squares in 2 ways, for example, as 523217862244 + 687904360000 = 723338^2 + 829400^2 .

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 412739 + ... + 1610154.

It is an arithmetic number, because the mean of its divisors is an integer number (64765086687).

Almost surely, 2^{1211122222244} is an apocalyptic number.

It is an amenable number.

1211122222244 is a deficient number, since it is larger than the sum of its proper divisors (1120420898488).

1211122222244 is a wasteful number, since it uses less digits than its factorization.

1211122222244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2024156 (or 2024143 counting only the distinct ones).

The product of its digits is 2048, while the sum is 26.

Adding to 1211122222244 its reverse (4422222211121), we get a palindrome (5633344433365).

The spelling of 1211122222244 in words is "one trillion, two hundred eleven billion, one hundred twenty-two million, two hundred twenty-two thousand, two hundred forty-four".