12121220200101 has 4 divisors (see below), whose sum is σ = 16161626933472. Its totient is φ = 8080813466732.

The previous prime is 12121220200097. The next prime is 12121220200147. The reversal of 12121220200101 is 10100202212121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12121220200101 - 2² = 12121220200097 is a prime.

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 3 ways as a sum of consecutive naturals, for example, 2020203366681 + ... + 2020203366686.

It is an arithmetic number, because the mean of its divisors is an integer number (4040406733368).

Almost surely, 2^{12121220200101} is an apocalyptic number.

It is an amenable number.

12121220200101 is a deficient number, since it is larger than the sum of its proper divisors (4040406733371).

12121220200101 is an equidigital number, since it uses as much as digits as its factorization.

12121220200101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4040406733370.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 12121220200101 its reverse (10100202212121), we get a palindrome (22221422412222).

The spelling of 12121220200101 in words is "twelve trillion, one hundred twenty-one billion, two hundred twenty million, two hundred thousand, one hundred one".