11201220120001 has 4 divisors (see below), whose sum is σ = 11201228222400. Its totient is φ = 11201212017604.

The previous prime is 11201220119993. The next prime is 11201220120029. The reversal of 11201220120001 is 10002102210211.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 11201220120001 - 2³ = 11201220119993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11201220120301) 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, 1398541 + ... + 4935418.

It is an arithmetic number, because the mean of its divisors is an integer number (2800307055600).

Almost surely, 2^{11201220120001} is an apocalyptic number.

It is an amenable number.

11201220120001 is a deficient number, since it is larger than the sum of its proper divisors (8102399).

11201220120001 is an equidigital number, since it uses as much as digits as its factorization.

11201220120001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8102398.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 11201220120001 its reverse (10002102210211), we get a palindrome (21203322330212).

The spelling of 11201220120001 in words is "eleven trillion, two hundred one billion, two hundred twenty million, one hundred twenty thousand, one".