20121121020110 has 32 divisors (see below), whose sum is σ = 39511187383392. Its totient is φ = 7316656007680.

The previous prime is 20121121020109. The next prime is 20121121020113. The reversal of 20121121020110 is 1102012112102.

It is a super-2 number, since 2×20121121020110² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20121121020113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5734634 + ... + 8551506.

It is an arithmetic number, because the mean of its divisors is an integer number (1234724605731).

Almost surely, 2^{20121121020110} is an apocalyptic number.

20121121020110 is a deficient number, since it is larger than the sum of its proper divisors (19390066363282).

20121121020110 is a wasteful number, since it uses less digits than its factorization.

20121121020110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2881828.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 20121121020110 its reverse (1102012112102), we get a palindrome (21223133132212).

The spelling of 20121121020110 in words is "twenty trillion, one hundred twenty-one billion, one hundred twenty-one million, twenty thousand, one hundred ten".