100221221211100 has 36 divisors (see below), whose sum is σ = 237250963669608. Its totient is φ = 36444080440000.

The previous prime is 100221221211029. The next prime is 100221221211151. The reversal of 100221221211100 is 1112122122001.

It is a congruent 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, 45555099451 + ... + 45555101650.

It is an arithmetic number, because the mean of its divisors is an integer number (6590304546378).

Almost surely, 2^{100221221211100} is an apocalyptic number.

100221221211100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100221221211100 is an abundant number, since it is smaller than the sum of its proper divisors (137029742458508).

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

100221221211100 is a wasteful number, since it uses less digits than its factorization.

100221221211100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91110201126 (or 91110201119 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 100221221211100 its reverse (1112122122001), we get a palindrome (101333343333101).

The spelling of 100221221211100 in words is "one hundred trillion, two hundred twenty-one billion, two hundred twenty-one million, two hundred eleven thousand, one hundred".