12101212111101 has 32 divisors (see below), whose sum is σ = 16217730713088. Its totient is φ = 8026207833600.

The previous prime is 12101212111097. The next prime is 12101212111111. The reversal of 12101212111101 is 10111121210121.

It is not a de Polignac number, because 12101212111101 - 2² = 12101212111097 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12101212111111) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1222216251 + ... + 1222226151.

It is an arithmetic number, because the mean of its divisors is an integer number (506804084784).

Almost surely, 2^{12101212111101} is an apocalyptic number.

It is an amenable number.

12101212111101 is a deficient number, since it is larger than the sum of its proper divisors (4116518601987).

12101212111101 is a wasteful number, since it uses less digits than its factorization.

12101212111101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12821.

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

Adding to 12101212111101 its reverse (10111121210121), we get a palindrome (22212333321222).

The spelling of 12101212111101 in words is "twelve trillion, one hundred one billion, two hundred twelve million, one hundred eleven thousand, one hundred one".