11211220121003 has 16 divisors (see below), whose sum is σ = 13030202334720. Its totient is φ = 9446588064000.

The previous prime is 11211220120987. The next prime is 11211220121071. The reversal of 11211220121003 is 30012102211211.

It is a happy number.

11211220121003 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 11211220121003 - 2⁴ = 11211220120987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11211220129003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30108923 + ... + 30479003.

It is an arithmetic number, because the mean of its divisors is an integer number (814387645920).

Almost surely, 2^{11211220121003} is an apocalyptic number.

11211220121003 is a deficient number, since it is larger than the sum of its proper divisors (1818982213717).

11211220121003 is an equidigital number, since it uses as much as digits as its factorization.

11211220121003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443498.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 11211220121003 its reverse (30012102211211), we get a palindrome (41223322332214).

The spelling of 11211220121003 in words is "eleven trillion, two hundred eleven billion, two hundred twenty million, one hundred twenty-one thousand, three".