21001120100110 has 8 divisors (see below), whose sum is σ = 37802016180216. Its totient is φ = 8400448040040.

The previous prime is 21001120100101. The next prime is 21001120100117. The reversal of 21001120100110 is 1100102110012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (10), and also a Moran number because the ratio is a prime number: 2100112010011 = 21001120100110 / (2 + 1 + 0 + 0 + 1 + 1 + 2 + 0 + 1 + 0 + 0 + 1 + 1 + 0).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21001120100117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1050056004996 + ... + 1050056005015.

It is an arithmetic number, because the mean of its divisors is an integer number (4725252022527).

Almost surely, 2^{21001120100110} is an apocalyptic number.

21001120100110 is a deficient number, since it is larger than the sum of its proper divisors (16800896080106).

21001120100110 is a wasteful number, since it uses less digits than its factorization.

21001120100110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2100112010018.

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

Adding to 21001120100110 its reverse (1100102110012), we get a palindrome (22101222210122).

The spelling of 21001120100110 in words is "twenty-one trillion, one billion, one hundred twenty million, one hundred thousand, one hundred ten".