20121110121201 has 8 divisors (see below), whose sum is σ = 27398958463104. Its totient is φ = 13128667596720.

The previous prime is 20121110121179. The next prime is 20121110121223. The reversal of 20121110121201 is 10212101112102.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20121110121179) and next prime (20121110121223).

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

It is not a de Polignac number, because 20121110121201 - 2⁶ = 20121110121137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20121111121201) 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, 71351454190 + ... + 71351454471.

It is an arithmetic number, because the mean of its divisors is an integer number (3424869807888).

Almost surely, 2^{20121110121201} is an apocalyptic number.

It is an amenable number.

20121110121201 is a deficient number, since it is larger than the sum of its proper divisors (7277848341903).

20121110121201 is a wasteful number, since it uses less digits than its factorization.

20121110121201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142702908711.

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

Adding to 20121110121201 its reverse (10212101112102), we get a palindrome (30333211233303).

Subtracting from 20121110121201 its reverse (10212101112102), we obtain a palindrome (9909009009099).

The spelling of 20121110121201 in words is "twenty trillion, one hundred twenty-one billion, one hundred ten million, one hundred twenty-one thousand, two hundred one".