20121121133404 has 12 divisors (see below), whose sum is σ = 35694317627584. Its totient is φ = 9922744668384.

The previous prime is 20121121133381. The next prime is 20121121133431. The reversal of 20121121133404 is 40433112112102.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34453974252 + ... + 34453974835.

Almost surely, 2^{20121121133404} is an apocalyptic number.

It is an amenable number.

20121121133404 is a deficient number, since it is larger than the sum of its proper divisors (15573196494180).

20121121133404 is a wasteful number, since it uses less digits than its factorization.

20121121133404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68907949164 (or 68907949162 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

Adding to 20121121133404 its reverse (40433112112102), we get a palindrome (60554233245506).

The spelling of 20121121133404 in words is "twenty trillion, one hundred twenty-one billion, one hundred twenty-one million, one hundred thirty-three thousand, four hundred four".