20213440110 has 64 divisors (see below), whose sum is σ = 54055460160. Its totient is φ = 5374955520.

The previous prime is 20213440099. The next prime is 20213440189. The reversal of 20213440110 is 1104431202.

20213440110 is a `hidden beast` number, since 2 + 0 + 213 + 440 + 1 + 10 = 666.

It is a super-2 number, since 2×20213440110² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10731 + ... + 201350.

It is an arithmetic number, because the mean of its divisors is an integer number (844616565).

Almost surely, 2^20213440110 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20213440110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27027730080).

20213440110 is an abundant number, since it is smaller than the sum of its proper divisors (33842020050).

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

20213440110 is a wasteful number, since it uses less digits than its factorization.

20213440110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212450 (or 212444 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 20213440110 its reverse (1104431202), we get a palindrome (21317871312).

The spelling of 20213440110 in words is "twenty billion, two hundred thirteen million, four hundred forty thousand, one hundred ten".