111221000222211 has 24 divisors (see below), whose sum is σ = 175617205081344. Its totient is φ = 67268254725360.

The previous prime is 111221000222203. The next prime is 111221000222273. The reversal of 111221000222211 is 112222000122111.

111221000222211 is a `hidden beast` number, since 1 + 11 + 221 + 0 + 0 + 0 + 222 + 211 = 666.

It is not a de Polignac number, because 111221000222211 - 2³ = 111221000222203 is a prime.

It is a super-2 number, since 2×111221000222211² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (111221000222201) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1153385511 + ... + 1153481936.

It is an arithmetic number, because the mean of its divisors is an integer number (7317383545056).

Almost surely, 2^{111221000222211} is an apocalyptic number.

111221000222211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

111221000222211 is a deficient number, since it is larger than the sum of its proper divisors (64396204859133).

111221000222211 is a wasteful number, since it uses less digits than its factorization.

111221000222211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2306867951 (or 2306867948 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 111221000222211 its reverse (112222000122111), we get a palindrome (223443000344322).

The spelling of 111221000222211 in words is "one hundred eleven trillion, two hundred twenty-one billion, two hundred twenty-two thousand, two hundred eleven".