20121112121102 has 16 divisors (see below), whose sum is σ = 30934692409824. Its totient is φ = 9809816016000.

The previous prime is 20121112121069. The next prime is 20121112121119. The reversal of 20121112121102 is 20112121112102.

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, 66856799 + ... + 67157082.

It is an arithmetic number, because the mean of its divisors is an integer number (1933418275614).

Almost surely, 2^{20121112121102} is an apocalyptic number.

20121112121102 is a deficient number, since it is larger than the sum of its proper divisors (10813580288722).

20121112121102 is a wasteful number, since it uses less digits than its factorization.

20121112121102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134015755.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 20121112121102 its reverse (20112121112102), we get a palindrome (40233233233204).

The spelling of 20121112121102 in words is "twenty trillion, one hundred twenty-one billion, one hundred twelve million, one hundred twenty-one thousand, one hundred two".