100201122220220 has 48 divisors (see below), whose sum is σ = 240484112863680. Its totient is φ = 34354467684864.

The previous prime is 100201122220217. The next prime is 100201122220249. The reversal of 100201122220220 is 22022221102001.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22729262 + ... + 26777258.

It is an arithmetic number, because the mean of its divisors is an integer number (5010085684660).

Almost surely, 2^{100201122220220} is an apocalyptic number.

100201122220220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100201122220220 is an abundant number, since it is smaller than the sum of its proper divisors (140282990643460).

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

100201122220220 is a wasteful number, since it uses less digits than its factorization.

100201122220220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4224822 (or 4224820 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 100201122220220 its reverse (22022221102001), we get a palindrome (122223343322221).

The spelling of 100201122220220 in words is "one hundred trillion, two hundred one billion, one hundred twenty-two million, two hundred twenty thousand, two hundred twenty".