222120212000 has 48 divisors (see below), whose sum is σ = 545749370712. Its totient is φ = 88848083200.

The previous prime is 222120211967. The next prime is 222120212003. The reversal of 222120212000 is 212021222.

It can be written as a sum of positive squares in 4 ways, for example, as 139275254416 + 82844957584 = 373196^2 + 287828^2 .

It is not an unprimeable number, because it can be changed into a prime (222120212003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27761027 + ... + 27769026.

Almost surely, 2^222120212000 is an apocalyptic number.

222120212000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222120212000 is an abundant number, since it is smaller than the sum of its proper divisors (323629158712).

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

222120212000 is an equidigital number, since it uses as much as digits as its factorization.

222120212000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55530078 (or 55530060 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 222120212000 its reverse (212021222), we get a palindrome (222332233222).

The spelling of 222120212000 in words is "two hundred twenty-two billion, one hundred twenty million, two hundred twelve thousand".