20012220110100 has 288 divisors, whose sum is σ = 59269095424000. Its totient is φ = 5212299456000.

The previous prime is 20012220110039. The next prime is 20012220110107. The reversal of 20012220110100 is 101102221002.

It is a super-2 number, since 2×20012220110100² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20012220110107) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1050445575 + ... + 1050464625.

Almost surely, 2^{20012220110100} is an apocalyptic number.

20012220110100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20012220110100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29634547712000).

20012220110100 is an abundant number, since it is smaller than the sum of its proper divisors (39256875313900).

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

20012220110100 is a wasteful number, since it uses less digits than its factorization.

20012220110100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19623 (or 19616 counting only the distinct ones).

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

Adding to 20012220110100 its reverse (101102221002), we get a palindrome (20113322331102).

The spelling of 20012220110100 in words is "twenty trillion, twelve billion, two hundred twenty million, one hundred ten thousand, one hundred".