11122222201 has 4 divisors (see below), whose sum is σ = 11124054900. Its totient is φ = 11120389504.

The previous prime is 11122222183. The next prime is 11122222249. The reversal of 11122222201 is 10222222111.

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 5140746601 + 5981475600 = 71699^2 + 77340^2 .

It is a cyclic number.

It is not a de Polignac number, because 11122222201 - 2⁵ = 11122222169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11122222271) 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, 907216 + ... + 919393.

It is an arithmetic number, because the mean of its divisors is an integer number (2781013725).

Almost surely, 2^11122222201 is an apocalyptic number.

It is an amenable number.

11122222201 is a deficient number, since it is larger than the sum of its proper divisors (1832699).

11122222201 is an equidigital number, since it uses as much as digits as its factorization.

11122222201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1832698.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 11122222201 its reverse (10222222111), we get a palindrome (21344444312).

The spelling of 11122222201 in words is "eleven billion, one hundred twenty-two million, two hundred twenty-two thousand, two hundred one".