21011002020110 has 8 divisors (see below), whose sum is σ = 37819803636216. Its totient is φ = 8404400808040.

The previous prime is 21011002020101. The next prime is 21011002020121. The reversal of 21011002020110 is 1102020011012.

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

It is a junction number, because it is equal to n+sod(n) for n = 21011002020091 and 21011002020100.

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 3 ways as a sum of consecutive naturals, for example, 1050550100996 + ... + 1050550101015.

It is an arithmetic number, because the mean of its divisors is an integer number (4727475454527).

Almost surely, 2^{21011002020110} is an apocalyptic number.

21011002020110 is a deficient number, since it is larger than the sum of its proper divisors (16808801616106).

21011002020110 is a wasteful number, since it uses less digits than its factorization.

21011002020110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2101100202018.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 21011002020110 its reverse (1102020011012), we get a palindrome (22113022031122).

The spelling of 21011002020110 in words is "twenty-one trillion, eleven billion, two million, twenty thousand, one hundred ten".