20120121021122 has 32 divisors (see below), whose sum is σ = 30745921420800. Its totient is φ = 9872097779200.

The previous prime is 20120121021071. The next prime is 20120121021211. The reversal of 20120121021122 is 22112012102102.

It is a self number, because there is not a number n which added to its sum of digits gives 20120121021122.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 159720722 + ... + 159846642.

It is an arithmetic number, because the mean of its divisors is an integer number (960810044400).

Almost surely, 2^{20120121021122} is an apocalyptic number.

20120121021122 is a deficient number, since it is larger than the sum of its proper divisors (10625800399678).

20120121021122 is a wasteful number, since it uses less digits than its factorization.

20120121021122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128362.

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

Adding to 20120121021122 its reverse (22112012102102), we get a palindrome (42232133123224).

The spelling of 20120121021122 in words is "twenty trillion, one hundred twenty billion, one hundred twenty-one million, twenty-one thousand, one hundred twenty-two".