20112121022012 has 24 divisors (see below), whose sum is σ = 35275364586000. Its totient is φ = 10033446398976.

The previous prime is 20112121021981. The next prime is 20112121022069. The reversal of 20112121022012 is 21022012121102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111098123 + ... + 111279005.

It is an arithmetic number, because the mean of its divisors is an integer number (1469806857750).

Almost surely, 2^{20112121022012} is an apocalyptic number.

It is an amenable number.

20112121022012 is a deficient number, since it is larger than the sum of its proper divisors (15163243563988).

20112121022012 is a wasteful number, since it uses less digits than its factorization.

20112121022012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243245 (or 243243 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 20112121022012 its reverse (21022012121102), we get a palindrome (41134133143114).

The spelling of 20112121022012 in words is "twenty trillion, one hundred twelve billion, one hundred twenty-one million, twenty-two thousand, twelve".