100212120111111 has 16 divisors (see below), whose sum is σ = 138297254882400. Its totient is φ = 64469987404928.

The previous prime is 100212120111097. The next prime is 100212120111157. The reversal of 100212120111111 is 111111021212001.

It is a cyclic number.

It is not a de Polignac number, because 100212120111111 - 2¹⁷ = 100212119980039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100212120111511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 306672996 + ... + 306999593.

It is an arithmetic number, because the mean of its divisors is an integer number (8643578430150).

Almost surely, 2^{100212120111111} is an apocalyptic number.

100212120111111 is a deficient number, since it is larger than the sum of its proper divisors (38085134771289).

100212120111111 is a wasteful number, since it uses less digits than its factorization.

100212120111111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 613674498.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 100212120111111 its reverse (111111021212001), we get a palindrome (211323141323112).

The spelling of 100212120111111 in words is "one hundred trillion, two hundred twelve billion, one hundred twenty million, one hundred eleven thousand, one hundred eleven".