1111001022211 has 4 divisors (see below), whose sum is σ = 1111149618832. Its totient is φ = 1110852425592.

The previous prime is 1111001022193. The next prime is 1111001022239. The reversal of 1111001022211 is 1122201001111.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1111001022211 - 2⁵ = 1111001022179 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1111001022191 and 1111001022200.

It is not an unprimeable number, because it can be changed into a prime (1111001022511) 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, 74287095 + ... + 74302048.

It is an arithmetic number, because the mean of its divisors is an integer number (277787404708).

Almost surely, 2^{1111001022211} is an apocalyptic number.

1111001022211 is a deficient number, since it is larger than the sum of its proper divisors (148596621).

1111001022211 is an equidigital number, since it uses as much as digits as its factorization.

1111001022211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148596620.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1111001022211 its reverse (1122201001111), we get a palindrome (2233202023322).

It can be divided in two parts, 111100 and 1022211, that added together give a palindrome (1133311).

The spelling of 1111001022211 in words is "one trillion, one hundred eleven billion, one million, twenty-two thousand, two hundred eleven".