22121000012120 has 16 divisors (see below), whose sum is σ = 49772250027360. Its totient is φ = 8848400004832.

The previous prime is 22121000012087. The next prime is 22121000012147. The reversal of 22121000012120 is 2121000012122.

It is a junction number, because it is equal to n+sod(n) for n = 22121000012095 and 22121000012104.

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 3 ways as a sum of consecutive naturals, for example, 276512500112 + ... + 276512500191.

It is an arithmetic number, because the mean of its divisors is an integer number (3110765626710).

Almost surely, 2^{22121000012120} is an apocalyptic number.

22121000012120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22121000012120 is an abundant number, since it is smaller than the sum of its proper divisors (27651250015240).

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

22121000012120 is a wasteful number, since it uses less digits than its factorization.

22121000012120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553025000314 (or 553025000310 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 22121000012120 its reverse (2121000012122), we get a palindrome (24242000024242).

The spelling of 22121000012120 in words is "twenty-two trillion, one hundred twenty-one billion, twelve thousand, one hundred twenty".