20110021210110 has 256 divisors, whose sum is σ = 53584638621696. Its totient is φ = 4800089161728.

The previous prime is 20110021210099. The next prime is 20110021210117. The reversal of 20110021210110 is 1101212001102.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20110021210117) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 376727742 + ... + 376781118.

It is an arithmetic number, because the mean of its divisors is an integer number (209314994616).

Almost surely, 2^{20110021210110} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20110021210110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26792319310848).

20110021210110 is an abundant number, since it is smaller than the sum of its proper divisors (33474617411586).

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

20110021210110 is a wasteful number, since it uses less digits than its factorization.

20110021210110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53699.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 20110021210110 its reverse (1101212001102), we get a palindrome (21211233211212).

The spelling of 20110021210110 in words is "twenty trillion, one hundred ten billion, twenty-one million, two hundred ten thousand, one hundred ten".