20120121021102 has 16 divisors (see below), whose sum is σ = 40692379594320. Its totient is φ = 6631350748352.

The previous prime is 20120121021071. The next prime is 20120121021211. The reversal of 20120121021102 is 20112012102102.

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, 18839064093 + ... + 18839065160.

It is an arithmetic number, because the mean of its divisors is an integer number (2543273724645).

Almost surely, 2^{20120121021102} is an apocalyptic number.

20120121021102 is an abundant number, since it is smaller than the sum of its proper divisors (20572258573218).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20120121021102 is a wasteful number, since it uses less digits than its factorization.

20120121021102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37678129347.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20120121021102 its reverse (20112012102102), we get a palindrome (40232133123204).

The spelling of 20120121021102 in words is "twenty trillion, one hundred twenty billion, one hundred twenty-one million, twenty-one thousand, one hundred two".