20221201100 has 36 divisors (see below), whose sum is σ = 44599364208. Its totient is φ = 7955880000.

The previous prime is 20221201081. The next prime is 20221201129. The reversal of 20221201100 is 110212202.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1651376 + ... + 1663575.

It is an arithmetic number, because the mean of its divisors is an integer number (1238871228).

Almost surely, 2^20221201100 is an apocalyptic number.

20221201100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20221201100 is an abundant number, since it is smaller than the sum of its proper divisors (24378163108).

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

20221201100 is a wasteful number, since it uses less digits than its factorization.

20221201100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3315026 (or 3315019 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 20221201100 its reverse (110212202), we get a palindrome (20331413302).

The spelling of 20221201100 in words is "twenty billion, two hundred twenty-one million, two hundred one thousand, one hundred".