12101220211101 has 16 divisors (see below), whose sum is σ = 18440838119424. Its totient is φ = 6914651660784.

The previous prime is 12101220211097. The next prime is 12101220211123. The reversal of 12101220211101 is 10111202210121.

It is a happy number.

It is not a de Polignac number, because 12101220211101 - 2² = 12101220211097 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12101220211181) 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, 13355805 + ... + 14233058.

It is an arithmetic number, because the mean of its divisors is an integer number (1152552382464).

Almost surely, 2^{12101220211101} is an apocalyptic number.

It is an amenable number.

12101220211101 is a deficient number, since it is larger than the sum of its proper divisors (6339617908323).

12101220211101 is a wasteful number, since it uses less digits than its factorization.

12101220211101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27609760.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 12101220211101 its reverse (10111202210121), we get a palindrome (22212422421222).

The spelling of 12101220211101 in words is "twelve trillion, one hundred one billion, two hundred twenty million, two hundred eleven thousand, one hundred one".