222120021220000 has 120 divisors (see below), whose sum is σ = 546472499148576. Its totient is φ = 88844117856000.

The previous prime is 222120021219997. The next prime is 222120021220033. The reversal of 222120021220000 is 22120021222.

It is a super-3 number, since 3×222120021220000³ (a number of 44 digits) contains 333 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 480228847 + ... + 480691153.

Almost surely, 2^{222120021220000} is an apocalyptic number.

222120021220000 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 222120021220000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (273236249574288).

222120021220000 is an abundant number, since it is smaller than the sum of its proper divisors (324352477928576).

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

222120021220000 is an equidigital number, since it uses as much as digits as its factorization.

222120021220000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486360 (or 486337 counting only the distinct ones).

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

Adding to 222120021220000 its reverse (22120021222), we get a palindrome (222142141241222).

The spelling of 222120021220000 in words is "two hundred twenty-two trillion, one hundred twenty billion, twenty-one million, two hundred twenty thousand".