22121012000010 has 192 divisors, whose sum is σ = 67464590338944. Its totient is φ = 4590300556800.

The previous prime is 22121011999897. The next prime is 22121012000069. The reversal of 22121012000010 is 1000021012122.

It is a self number, because there is not a number n which added to its sum of digits gives 22121012000010.

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 95 ways as a sum of consecutive naturals, for example, 10919440 + ... + 12785780.

It is an arithmetic number, because the mean of its divisors is an integer number (351378074682).

Almost surely, 2^{22121012000010} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22121012000010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33732295169472).

22121012000010 is an abundant number, since it is smaller than the sum of its proper divisors (45343578338934).

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

22121012000010 is a wasteful number, since it uses less digits than its factorization.

22121012000010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1867109 (or 1867102 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 22121012000010 its reverse (1000021012122), we get a palindrome (23121033012132).

The spelling of 22121012000010 in words is "twenty-two trillion, one hundred twenty-one billion, twelve million, ten", and thus it is an aban number.