11222111222101 has 4 divisors (see below), whose sum is σ = 12085350546892. Its totient is φ = 10358871897312.

The previous prime is 11222111222089. The next prime is 11222111222159. The reversal of 11222111222101 is 10122211122211.

It is a happy number.

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 7292300581476 + 3929810640625 = 2700426^2 + 1982375^2 .

It is a cyclic number.

It is not a de Polignac number, because 11222111222101 - 2²⁷ = 11221977004373 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 (11222111222171) 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, 431619662376 + ... + 431619662401.

It is an arithmetic number, because the mean of its divisors is an integer number (3021337636723).

Almost surely, 2^{11222111222101} is an apocalyptic number.

It is an amenable number.

11222111222101 is a deficient number, since it is larger than the sum of its proper divisors (863239324791).

11222111222101 is an equidigital number, since it uses as much as digits as its factorization.

11222111222101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 863239324790.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 11222111222101 its reverse (10122211122211), we get a palindrome (21344322344312).

It can be divided in two parts, 1122211122210 and 1, that added together give a palindrome (1122211122211).

The spelling of 11222111222101 in words is "eleven trillion, two hundred twenty-two billion, one hundred eleven million, two hundred twenty-two thousand, one hundred one".