100212120111 has 16 divisors (see below), whose sum is σ = 134161100640. Its totient is φ = 66536156160.

The previous prime is 100212120079. The next prime is 100212120157. The reversal of 100212120111 is 111021212001.

It is not a de Polignac number, because 100212120111 - 2⁵ = 100212120079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100212120181) 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, 671341 + ... + 806921.

It is an arithmetic number, because the mean of its divisors is an integer number (8385068790).

Almost surely, 2^100212120111 is an apocalyptic number.

100212120111 is a deficient number, since it is larger than the sum of its proper divisors (33948980529).

100212120111 is a wasteful number, since it uses less digits than its factorization.

100212120111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136586.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 100212120111 its reverse (111021212001), we get a palindrome (211233332112).

The spelling of 100212120111 in words is "one hundred billion, two hundred twelve million, one hundred twenty thousand, one hundred eleven".