201101101200121 has 4 divisors (see below), whose sum is σ = 201101240989072. Its totient is φ = 201100961411172.

The previous prime is 201101101200101. The next prime is 201101101200193. The reversal of 201101101200121 is 121002101101102.

It is a happy number.

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 a de Polignac number, because none of the positive numbers 2^k-201101101200121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201101101200101) 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, 67713891 + ... + 70621336.

It is an arithmetic number, because the mean of its divisors is an integer number (50275310247268).

Almost surely, 2^{201101101200121} is an apocalyptic number.

It is an amenable number.

201101101200121 is a deficient number, since it is larger than the sum of its proper divisors (139788951).

201101101200121 is a wasteful number, since it uses less digits than its factorization.

201101101200121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139788950.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 201101101200121 its reverse (121002101101102), we get a palindrome (322103202301223).

The spelling of 201101101200121 in words is "two hundred one trillion, one hundred one billion, one hundred one million, two hundred thousand, one hundred twenty-one".