20222121100100 has 144 divisors (see below), whose sum is σ = 47992839261696. Its totient is φ = 7362732288000.

The previous prime is 20222121100079. The next prime is 20222121100171. The reversal of 20222121100100 is 100112122202.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 82669574 + ... + 82913826.

It is an arithmetic number, because the mean of its divisors is an integer number (333283605984).

Almost surely, 2^{20222121100100} is an apocalyptic number.

20222121100100 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 20222121100100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23996419630848).

20222121100100 is an abundant number, since it is smaller than the sum of its proper divisors (27770718161596).

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

20222121100100 is a wasteful number, since it uses less digits than its factorization.

20222121100100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245886 (or 245879 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20222121100100 its reverse (100112122202), we get a palindrome (20322233222302).

The spelling of 20222121100100 in words is "twenty trillion, two hundred twenty-two billion, one hundred twenty-one million, one hundred thousand, one hundred".