20121122212004 has 12 divisors (see below), whose sum is σ = 38413051495728. Its totient is φ = 9145964641800.

The previous prime is 20121122211877. The next prime is 20121122212021. The reversal of 20121122212004 is 40021222112102.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 228649116002 + ... + 228649116089.

It is an arithmetic number, because the mean of its divisors is an integer number (3201087624644).

Almost surely, 2^{20121122212004} is an apocalyptic number.

It is an amenable number.

20121122212004 is a deficient number, since it is larger than the sum of its proper divisors (18291929283724).

20121122212004 is a wasteful number, since it uses less digits than its factorization.

20121122212004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457298232106 (or 457298232104 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 20121122212004 its reverse (40021222112102), we get a palindrome (60142344324106).

The spelling of 20121122212004 in words is "twenty trillion, one hundred twenty-one billion, one hundred twenty-two million, two hundred twelve thousand, four".