100211111121212 has 48 divisors (see below), whose sum is σ = 215841774661632. Its totient is φ = 39643504505280.

The previous prime is 100211111121179. The next prime is 100211111121223. The reversal of 100211111121212 is 212121111112001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31384037 + ... + 34429347.

It is an arithmetic number, because the mean of its divisors is an integer number (4496703638784).

Almost surely, 2^{100211111121212} is an apocalyptic number.

It is an amenable number.

100211111121212 is an abundant number, since it is smaller than the sum of its proper divisors (115630663540420).

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

100211111121212 is a wasteful number, since it uses less digits than its factorization.

100211111121212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3135738 (or 3135736 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 100211111121212 its reverse (212121111112001), we get a palindrome (312332222233213).

The spelling of 100211111121212 in words is "one hundred trillion, two hundred eleven billion, one hundred eleven million, one hundred twenty-one thousand, two hundred twelve".