1111222201111 has 8 divisors (see below), whose sum is σ = 1224244802448. Its totient is φ = 1000200000000.

The previous prime is 1111222201079. The next prime is 1111222201121. The reversal of 1111222201111 is 1111022221111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1111222201111 - 2⁵ = 1111222201079 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 (1111222201121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 500098890 + ... + 500101111.

It is an arithmetic number, because the mean of its divisors is an integer number (153030600306).

Almost surely, 2^{1111222201111} is an apocalyptic number.

1111222201111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1111222201111 is a deficient number, since it is larger than the sum of its proper divisors (113022601337).

1111222201111 is a wasteful number, since it uses less digits than its factorization.

1111222201111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1000200113.

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

Adding to 1111222201111 its reverse (1111022221111), we get a palindrome (2222244422222).

It can be divided in two parts, 1111 and 222201111, that added together give a palindrome (222202222).

The spelling of 1111222201111 in words is "one trillion, one hundred eleven billion, two hundred twenty-two million, two hundred one thousand, one hundred eleven".