100221121211112 has 192 divisors, whose sum is σ = 299511684201600. Its totient is φ = 30021101383680.

The previous prime is 100221121211083. The next prime is 100221121211137. The reversal of 100221121211112 is 211112121122001.

It is a happy number.

100221121211112 is a `hidden beast` number, since 1 + 0 + 0 + 221 + 121 + 211 + 112 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

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, 277753888 + ... + 278114480.

It is an arithmetic number, because the mean of its divisors is an integer number (1559956688550).

Almost surely, 2^{100221121211112} is an apocalyptic number.

100221121211112 is a gapful number since it is divisible by the number (12) 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 100221121211112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (149755842100800).

100221121211112 is an abundant number, since it is smaller than the sum of its proper divisors (199290562990488).

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

100221121211112 is a wasteful number, since it uses less digits than its factorization.

100221121211112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364648 (or 364641 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 100221121211112 its reverse (211112121122001), we get a palindrome (311333242333113).

The spelling of 100221121211112 in words is "one hundred trillion, two hundred twenty-one billion, one hundred twenty-one million, two hundred eleven thousand, one hundred twelve".