100121200212112 has 40 divisors (see below), whose sum is σ = 200700400155840. Its totient is φ = 48328003489920.

The previous prime is 100121200212071. The next prime is 100121200212113. The reversal of 100121200212112 is 211212002121001.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (100121200212113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10690558 + ... + 17735005.

It is an arithmetic number, because the mean of its divisors is an integer number (5017510003896).

Almost surely, 2^{100121200212112} is an apocalyptic number.

It is an amenable number.

100121200212112 is an abundant number, since it is smaller than the sum of its proper divisors (100579199943728).

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

100121200212112 is a wasteful number, since it uses less digits than its factorization.

100121200212112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28433191 (or 28433185 counting only the distinct ones).

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

Adding to 100121200212112 its reverse (211212002121001), we get a palindrome (311333202333113).

The spelling of 100121200212112 in words is "one hundred trillion, one hundred twenty-one billion, two hundred million, two hundred twelve thousand, one hundred twelve".