100221101111100 has 72 divisors (see below), whose sum is σ = 290115267684480. Its totient is φ = 26712519577280.

The previous prime is 100221101111081. The next prime is 100221101111107. The reversal of 100221101111100 is 1111101122001.

100221101111100 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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 (100221101111107) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 81308442 + ... + 82531841.

It is an arithmetic number, because the mean of its divisors is an integer number (4029378717840).

Almost surely, 2^{100221101111100} is an apocalyptic number.

100221101111100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100221101111100 is an abundant number, since it is smaller than the sum of its proper divisors (189894166573380).

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

100221101111100 is a wasteful number, since it uses less digits than its factorization.

100221101111100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163842339 (or 163842332 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 100221101111100 its reverse (1111101122001), we get a palindrome (101332202233101).

The spelling of 100221101111100 in words is "one hundred trillion, two hundred twenty-one billion, one hundred one million, one hundred eleven thousand, one hundred".