11000122221 has 24 divisors (see below), whose sum is σ = 17069717952. Its totient is φ = 6274576000.

The previous prime is 11000122207. The next prime is 11000122223. The reversal of 11000122221 is 12222100011.

It is not a de Polignac number, because 11000122221 - 2²⁵ = 10966567789 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11000122197 and 11000122206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11000122223) 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, 885105 + ... + 897446.

It is an arithmetic number, because the mean of its divisors is an integer number (711238248).

Almost surely, 2^11000122221 is an apocalyptic number.

11000122221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11000122221 is a deficient number, since it is larger than the sum of its proper divisors (6069595731).

11000122221 is a wasteful number, since it uses less digits than its factorization.

11000122221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1782593 (or 1782582 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 11000122221 its reverse (12222100011), we get a palindrome (23222222232).

The spelling of 11000122221 in words is "eleven billion, one hundred twenty-two thousand, two hundred twenty-one".