11221221000111 has 8 divisors (see below), whose sum is σ = 14961962883504. Its totient is φ = 7480646558400.

The previous prime is 11221221000103. The next prime is 11221221000151. The reversal of 11221221000111 is 11100012212211.

It is a happy number.

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

It is not a de Polignac number, because 11221221000111 - 2³ = 11221221000103 is a prime.

It is a super-2 number, since 2×11221221000111² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11221221000151) 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, 41703966 + ... + 41972171.

It is an arithmetic number, because the mean of its divisors is an integer number (1870245360438).

Almost surely, 2^{11221221000111} is an apocalyptic number.

11221221000111 is a deficient number, since it is larger than the sum of its proper divisors (3740741883393).

11221221000111 is an equidigital number, since it uses as much as digits as its factorization.

11221221000111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83720841.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 11221221000111 its reverse (11100012212211), we get a palindrome (22321233212322).

The spelling of 11221221000111 in words is "eleven trillion, two hundred twenty-one billion, two hundred twenty-one million, one hundred eleven", and thus it is an aban number.