201120121110101 has 4 divisors (see below), whose sum is σ = 201120779675532. Its totient is φ = 201119462544672.

The previous prime is 201120121110049. The next prime is 201120121110127. The reversal of 201120121110101 is 101011121021102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 60246936372100 + 140873184738001 = 7761890^2 + 11869001^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201120121110101 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 (201120121119101) 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, 328824416 + ... + 329435481.

It is an arithmetic number, because the mean of its divisors is an integer number (50280194918883).

Almost surely, 2^{201120121110101} is an apocalyptic number.

It is an amenable number.

201120121110101 is a deficient number, since it is larger than the sum of its proper divisors (658565431).

201120121110101 is an equidigital number, since it uses as much as digits as its factorization.

201120121110101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 658565430.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 201120121110101 its reverse (101011121021102), we get a palindrome (302131242131203).

The spelling of 201120121110101 in words is "two hundred one trillion, one hundred twenty billion, one hundred twenty-one million, one hundred ten thousand, one hundred one".