20021102002110 has 96 divisors (see below), whose sum is σ = 52824761571456. Its totient is φ = 4852795147200.

The previous prime is 20021102002093. The next prime is 20021102002117. The reversal of 20021102002110 is 1120020112002.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20021102002117) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 21568665 + ... + 22477755.

It is an arithmetic number, because the mean of its divisors is an integer number (550257933036).

Almost surely, 2^{20021102002110} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20021102002110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26412380785728).

20021102002110 is an abundant number, since it is smaller than the sum of its proper divisors (32803659569346).

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

20021102002110 is a wasteful number, since it uses less digits than its factorization.

20021102002110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 915190 (or 915179 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 20021102002110 its reverse (1120020112002), we get a palindrome (21141122114112).

The spelling of 20021102002110 in words is "twenty trillion, twenty-one billion, one hundred two million, two thousand, one hundred ten".