20121021011122 has 16 divisors (see below), whose sum is σ = 30370466299680. Its totient is φ = 9997547578272.

The previous prime is 20121021011027. The next prime is 20121021011129. The reversal of 20121021011122 is 22111012012102.

It is a junction number, because it is equal to n+sod(n) for n = 20121021011096 and 20121021011105.

It is not an unprimeable number, because it can be changed into a prime (20121021011129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1202083 + ... + 6456550.

It is an arithmetic number, because the mean of its divisors is an integer number (1898154143730).

Almost surely, 2^{20121021011122} is an apocalyptic number.

20121021011122 is a deficient number, since it is larger than the sum of its proper divisors (10249445288558).

20121021011122 is a wasteful number, since it uses less digits than its factorization.

20121021011122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7666857.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 20121021011122 its reverse (22111012012102), we get a palindrome (42232033023224).

The spelling of 20121021011122 in words is "twenty trillion, one hundred twenty-one billion, twenty-one million, eleven thousand, one hundred twenty-two".