22011021221222 has 8 divisors (see below), whose sum is σ = 36018034725672. Its totient is φ = 10005009646000.

The previous prime is 22011021221159. The next prime is 22011021221237. The reversal of 22011021221222 is 22212212011022.

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

It is a junction number, because it is equal to n+sod(n) for n = 22011021221194 and 22011021221203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 500250482279 + ... + 500250482322.

It is an arithmetic number, because the mean of its divisors is an integer number (4502254340709).

Almost surely, 2^{22011021221222} is an apocalyptic number.

22011021221222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

22011021221222 is a deficient number, since it is larger than the sum of its proper divisors (14007013504450).

22011021221222 is a wasteful number, since it uses less digits than its factorization.

22011021221222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1000500964614.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 22011021221222 its reverse (22212212011022), we get a palindrome (44223233232244).

The spelling of 22011021221222 in words is "twenty-two trillion, eleven billion, twenty-one million, two hundred twenty-one thousand, two hundred twenty-two".