11221211201201 has 4 divisors (see below), whose sum is σ = 11221686720000. Its totient is φ = 11220735682404.

The previous prime is 11221211201177. The next prime is 11221211201231. The reversal of 11221211201201 is 10210211212211.

11221211201201 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 11221211201201 - 2³⁸ = 10946333294257 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11221211201201.

It is not an unprimeable number, because it can be changed into a prime (11221211201231) 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, 237724001 + ... + 237771198.

It is an arithmetic number, because the mean of its divisors is an integer number (2805421680000).

Almost surely, 2^{11221211201201} is an apocalyptic number.

It is an amenable number.

11221211201201 is a deficient number, since it is larger than the sum of its proper divisors (475518799).

11221211201201 is an equidigital number, since it uses as much as digits as its factorization.

11221211201201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475518798.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 11221211201201 its reverse (10210211212211), we get a palindrome (21431422413412).

The spelling of 11221211201201 in words is "eleven trillion, two hundred twenty-one billion, two hundred eleven million, two hundred one thousand, two hundred one".