22001222001012 has 24 divisors (see below), whose sum is σ = 51511393498656. Its totient is φ = 7308710834208.

The previous prime is 22001222001001. The next prime is 22001222001047. The reversal of 22001222001012 is 21010022210022.

It is a super-3 number, since 3×22001222001012³ (a number of 41 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22001222000982 and 22001222001000.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3128725438 + ... + 3128732469.

It is an arithmetic number, because the mean of its divisors is an integer number (2146308062444).

Almost surely, 2^{22001222001012} is an apocalyptic number.

It is an amenable number.

22001222001012 is an abundant number, since it is smaller than the sum of its proper divisors (29510171497644).

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

22001222001012 is a wasteful number, since it uses less digits than its factorization.

22001222001012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6257458207 (or 6257458205 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 22001222001012 its reverse (21010022210022), we get a palindrome (43011244211034).

The spelling of 22001222001012 in words is "twenty-two trillion, one billion, two hundred twenty-two million, one thousand, twelve".