12100121012111 has 4 divisors (see below), whose sum is σ = 13200132013224. Its totient is φ = 11000110011000.

The previous prime is 12100121012059. The next prime is 12100121012141. The reversal of 12100121012111 is 11121012100121.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 12100121012111 - 2²² = 12100116817807 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12100121012141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 550005500540 + ... + 550005500561.

It is an arithmetic number, because the mean of its divisors is an integer number (3300033003306).

Almost surely, 2^{12100121012111} is an apocalyptic number.

12100121012111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12100121012111 is a deficient number, since it is larger than the sum of its proper divisors (1100011001113).

12100121012111 is a wasteful number, since it uses less digits than its factorization.

12100121012111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1100011001112.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 12100121012111 its reverse (11121012100121), we get a palindrome (23221133112232).

It can be divided in two parts, 121001 and 21012111, that added together give a palindrome (21133112).

The spelling of 12100121012111 in words is "twelve trillion, one hundred billion, one hundred twenty-one million, twelve thousand, one hundred eleven".