22212122221012 has 24 divisors (see below), whose sum is σ = 39779137244000. Its totient is φ = 10846705627296.

The previous prime is 22212122221007. The next prime is 22212122221027. The reversal of 22212122221012 is 21012222121222.

It is a super-2 number, since 2×22212122221012² (a number of 27 digits) contains 22 as substring.

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 in 7 ways as a sum of consecutive naturals, for example, 4656687 + ... + 8130742.

Almost surely, 2^{22212122221012} is an apocalyptic number.

It is an amenable number.

22212122221012 is a deficient number, since it is larger than the sum of its proper divisors (17567015022988).

22212122221012 is a wasteful number, since it uses less digits than its factorization.

22212122221012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12797575 (or 12797573 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 22212122221012 its reverse (21012222121222), we get a palindrome (43224344342234).

The spelling of 22212122221012 in words is "twenty-two trillion, two hundred twelve billion, one hundred twenty-two million, two hundred twenty-one thousand, twelve".