100111021121212 has 12 divisors (see below), whose sum is σ = 175312581561936. Its totient is φ = 50021712103520.

The previous prime is 100111021121191. The next prime is 100111021121383. The reversal of 100111021121212 is 212121120111001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8449607608 + ... + 8449619455.

It is an arithmetic number, because the mean of its divisors is an integer number (14609381796828).

Almost surely, 2^{100111021121212} is an apocalyptic number.

It is an amenable number.

100111021121212 is a deficient number, since it is larger than the sum of its proper divisors (75201560440724).

100111021121212 is a wasteful number, since it uses less digits than its factorization.

100111021121212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16899228548 (or 16899228546 counting only the distinct ones).

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

Adding to 100111021121212 its reverse (212121120111001), we get a palindrome (312232141232213).

The spelling of 100111021121212 in words is "one hundred trillion, one hundred eleven billion, twenty-one million, one hundred twenty-one thousand, two hundred twelve".