16122221201222 has 4 divisors (see below), whose sum is σ = 24183331801836. Its totient is φ = 8061110600610.

The previous prime is 16122221201213. The next prime is 16122221201269. The reversal of 16122221201222 is 22210212222161.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×16122221201222² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16122221201191 and 16122221201200.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4030555300304 + ... + 4030555300307.

It is an arithmetic number, because the mean of its divisors is an integer number (6045832950459).

Almost surely, 2^{16122221201222} is an apocalyptic number.

16122221201222 is a deficient number, since it is larger than the sum of its proper divisors (8061110600614).

16122221201222 is an equidigital number, since it uses as much as digits as its factorization.

16122221201222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8061110600613.

The product of its (nonzero) digits is 1536, while the sum is 26.

Adding to 16122221201222 its reverse (22210212222161), we get a palindrome (38332433423383).

The spelling of 16122221201222 in words is "sixteen trillion, one hundred twenty-two billion, two hundred twenty-one million, two hundred one thousand, two hundred twenty-two".