22121120022112 has 48 divisors (see below), whose sum is σ = 45942124354560. Its totient is φ = 10455793552512.

The previous prime is 22121120022107. The next prime is 22121120022143. The reversal of 22121120022112 is 21122002112122.

It is a super-2 number, since 2×22121120022112² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 22121120022112.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39009448 + ... + 39572455.

It is an arithmetic number, because the mean of its divisors is an integer number (957127590720).

Almost surely, 2^{22121120022112} is an apocalyptic number.

It is an amenable number.

22121120022112 is an abundant number, since it is smaller than the sum of its proper divisors (23821004332448).

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

22121120022112 is a wasteful number, since it uses less digits than its factorization.

22121120022112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78582395 (or 78582387 counting only the distinct ones).

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

Adding to 22121120022112 its reverse (21122002112122), we get a palindrome (43243122134234).

The spelling of 22121120022112 in words is "twenty-two trillion, one hundred twenty-one billion, one hundred twenty million, twenty-two thousand, one hundred twelve".