12121220200111 has 8 divisors (see below), whose sum is σ = 13223174533200. Its totient is φ = 11019270071040.

The previous prime is 12121220200097. The next prime is 12121220200147. The reversal of 12121220200111 is 11100202212121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12121220200111 - 2⁷ = 12121220199983 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 (12121220200171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10441285 + ... + 11543953.

It is an arithmetic number, because the mean of its divisors is an integer number (1652896816650).

Almost surely, 2^{12121220200111} is an apocalyptic number.

12121220200111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12121220200111 is a deficient number, since it is larger than the sum of its proper divisors (1101954333089).

12121220200111 is a wasteful number, since it uses less digits than its factorization.

12121220200111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2102009.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 12121220200111 its reverse (11100202212121), we get a palindrome (23221422412232).

The spelling of 12121220200111 in words is "twelve trillion, one hundred twenty-one billion, two hundred twenty million, two hundred thousand, one hundred eleven".