21122210011222 has 8 divisors (see below), whose sum is σ = 31803783896016. Its totient is φ = 10520948712552.

The previous prime is 21122210011181. The next prime is 21122210011223. The reversal of 21122210011222 is 22211001222112.

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

It is a super-2 number, since 2×21122210011222² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21122210011222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21122210011223) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 20078145873 + ... + 20078146924.

It is an arithmetic number, because the mean of its divisors is an integer number (3975472987002).

Almost surely, 2^{21122210011222} is an apocalyptic number.

21122210011222 is a deficient number, since it is larger than the sum of its proper divisors (10681573884794).

21122210011222 is a wasteful number, since it uses less digits than its factorization.

21122210011222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40156293062.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 21122210011222 its reverse (22211001222112), we get a palindrome (43333211233334).

The spelling of 21122210011222 in words is "twenty-one trillion, one hundred twenty-two billion, two hundred ten million, eleven thousand, two hundred twenty-two".