22121200011222 has 96 divisors (see below), whose sum is σ = 52717293877248. Its totient is φ = 6661331287488.

The previous prime is 22121200011217. The next prime is 22121200011233. The reversal of 22121200011222 is 22211000212122.

It is a happy number.

22121200011222 is a `hidden beast` number, since 221 + 21 + 200 + 0 + 1 + 1 + 222 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 22121200011195 and 22121200011204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 245683303 + ... + 245773325.

It is an arithmetic number, because the mean of its divisors is an integer number (549138477888).

Almost surely, 2^{22121200011222} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22121200011222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26358646938624).

22121200011222 is an abundant number, since it is smaller than the sum of its proper divisors (30596093866026).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22121200011222 is a wasteful number, since it uses less digits than its factorization.

22121200011222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112434 (or 112431 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 22121200011222 its reverse (22211000212122), we get a palindrome (44332200223344).

The spelling of 22121200011222 in words is "twenty-two trillion, one hundred twenty-one billion, two hundred million, eleven thousand, two hundred twenty-two".