22021122120000 has 280 divisors, whose sum is σ = 72877859319936. Its totient is φ = 5866581504000.

The previous prime is 22021122119993. The next prime is 22021122120031. The reversal of 22021122120000 is 2122112022.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 123871177 + ... + 124048823.

Almost surely, 2^{22021122120000} is an apocalyptic number.

22021122120000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22021122120000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36438929659968).

22021122120000 is an abundant number, since it is smaller than the sum of its proper divisors (50856737199936).

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

22021122120000 is a wasteful number, since it uses less digits than its factorization.

22021122120000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178715 (or 178690 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 22021122120000 its reverse (2122112022), we get a palindrome (22023244232022).

The spelling of 22021122120000 in words is "twenty-two trillion, twenty-one billion, one hundred twenty-two million, one hundred twenty thousand".