20121100100110 has 16 divisors (see below), whose sum is σ = 36219679423200. Its totient is φ = 8048062430496.

The previous prime is 20121100100071. The next prime is 20121100100131. The reversal of 20121100100110 is 1100100112102.

It is a Harshad number since it is a multiple of its sum of digits (10).

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, 46977345 + ... + 47403724.

It is an arithmetic number, because the mean of its divisors is an integer number (2263729963950).

Almost surely, 2^{20121100100110} is an apocalyptic number.

20121100100110 is a deficient number, since it is larger than the sum of its proper divisors (16098579323090).

20121100100110 is a wasteful number, since it uses less digits than its factorization.

20121100100110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94402395.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 20121100100110 its reverse (1100100112102), we get a palindrome (21221200212212).

The spelling of 20121100100110 in words is "twenty trillion, one hundred twenty-one billion, one hundred million, one hundred thousand, one hundred ten".