1211213324044 has 24 divisors (see below), whose sum is σ = 2139861265920. Its totient is φ = 599826657936.

The previous prime is 1211213324021. The next prime is 1211213324071. The reversal of 1211213324044 is 4404233121121.

It is a happy number.

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 7 ways as a sum of consecutive naturals, for example, 1875889 + ... + 2437495.

It is an arithmetic number, because the mean of its divisors is an integer number (89160886080).

Almost surely, 2^{1211213324044} is an apocalyptic number.

It is an amenable number.

1211213324044 is a deficient number, since it is larger than the sum of its proper divisors (928647941876).

1211213324044 is a wasteful number, since it uses less digits than its factorization.

1211213324044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 566757 (or 566755 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 1211213324044 its reverse (4404233121121), we get a palindrome (5615446445165).

The spelling of 1211213324044 in words is "one trillion, two hundred eleven billion, two hundred thirteen million, three hundred twenty-four thousand, forty-four".