22122221012012 has 24 divisors (see below), whose sum is σ = 42243064812480. Its totient is φ = 10053237436560.

The previous prime is 22122221012011. The next prime is 22122221012051. The reversal of 22122221012012 is 21021012222122.

It is not an unprimeable number, because it can be changed into a prime (22122221012011) by changing a digit.

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, 57746138 + ... + 58127969.

It is an arithmetic number, because the mean of its divisors is an integer number (1760127700520).

Almost surely, 2^{22122221012012} is an apocalyptic number.

22122221012012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

22122221012012 is a deficient number, since it is larger than the sum of its proper divisors (20120843800468).

22122221012012 is a wasteful number, since it uses less digits than its factorization.

22122221012012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115878461 (or 115878459 counting only the distinct ones).

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

Adding to 22122221012012 its reverse (21021012222122), we get a palindrome (43143233234134).

The spelling of 22122221012012 in words is "twenty-two trillion, one hundred twenty-two billion, two hundred twenty-one million, twelve thousand, twelve".