22121202220000 has 120 divisors (see below), whose sum is σ = 58607743687416. Its totient is φ = 8167828416000.

The previous prime is 22121202219947. The next prime is 22121202220009. The reversal of 22121202220000 is 2220212122.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22121202220009) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 42280774 + ... + 42800773.

Almost surely, 2^{22121202220000} is an apocalyptic number.

22121202220000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22121202220000 is an abundant number, since it is smaller than the sum of its proper divisors (36486541467416).

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

22121202220000 is an equidigital number, since it uses as much as digits as its factorization.

22121202220000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85081590 (or 85081567 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 22121202220000 its reverse (2220212122), we get a palindrome (22123422432122).

The spelling of 22121202220000 in words is "twenty-two trillion, one hundred twenty-one billion, two hundred two million, two hundred twenty thousand".