20121102122012 has 12 divisors (see below), whose sum is σ = 36742882136016. Its totient is φ = 9623135797440.

The previous prime is 20121102121987. The next prime is 20121102122047. The reversal of 20121102122012 is 21022120112102.

It is a congruent 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, 109353815789 + ... + 109353815972.

It is an arithmetic number, because the mean of its divisors is an integer number (3061906844668).

Almost surely, 2^{20121102122012} is an apocalyptic number.

It is an amenable number.

20121102122012 is a deficient number, since it is larger than the sum of its proper divisors (16621780014004).

20121102122012 is a wasteful number, since it uses less digits than its factorization.

20121102122012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218707631788 (or 218707631786 counting only the distinct ones).

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

Adding to 20121102122012 its reverse (21022120112102), we get a palindrome (41143222234114).

The spelling of 20121102122012 in words is "twenty trillion, one hundred twenty-one billion, one hundred two million, one hundred twenty-two thousand, twelve".