20000121101110 has 96 divisors (see below), whose sum is σ = 41527406944512. Its totient is φ = 6903067207680.

The previous prime is 20000121101087. The next prime is 20000121101137. The reversal of 20000121101110 is 1110112100002.

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

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3353887 + ... + 7158826.

It is an arithmetic number, because the mean of its divisors is an integer number (432577155672).

Almost surely, 2^{20000121101110} is an apocalyptic number.

20000121101110 is an abundant number, since it is smaller than the sum of its proper divisors (21527285843402).

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

20000121101110 is a wasteful number, since it uses less digits than its factorization.

20000121101110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10512806 (or 10512787 counting only the distinct ones).

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

Adding to 20000121101110 its reverse (1110112100002), we get a palindrome (21110233201112).

The spelling of 20000121101110 in words is "twenty trillion, one hundred twenty-one million, one hundred one thousand, one hundred ten".