22120021000000 has 588 divisors, whose sum is σ = 69629239984320. Its totient is φ = 6894384000000.

The previous prime is 22120020999991. The next prime is 22120021000019. The reversal of 22120021000000 is 12002122.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 83 ways as a sum of consecutive naturals, for example, 538979481 + ... + 539020519.

Almost surely, 2^{22120021000000} is an apocalyptic number.

22120021000000 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 22120021000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34814619992160).

22120021000000 is an abundant number, since it is smaller than the sum of its proper divisors (47509218984320).

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

22120021000000 is an frugal number, since it uses more digits than its factorization.

22120021000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41106 (or 41064 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 22120021000000 its reverse (12002122), we get a palindrome (22120033002122).

The spelling of 22120021000000 in words is "twenty-two trillion, one hundred twenty billion, twenty-one million", and thus it is an aban number.