222012220021200 has 600 divisors, whose sum is σ = 910713737131968. Its totient is φ = 50739888015360.

The previous prime is 222012220021187. The next prime is 222012220021217. The reversal of 222012220021200 is 2120022210222.

222012220021200 is a `hidden beast` number, since 2 + 220 + 1 + 2 + 220 + 0 + 21 + 200 = 666.

It is a tau number, because it is divible by the number of its divisors (600).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 2186981644 + ... + 2187083156.

Almost surely, 2^{222012220021200} is an apocalyptic number.

222012220021200 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 222012220021200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (455356868565984).

222012220021200 is an abundant number, since it is smaller than the sum of its proper divisors (688701517110768).

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

222012220021200 is a wasteful number, since it uses less digits than its factorization.

222012220021200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111193 (or 111173 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 222012220021200 its reverse (2120022210222), we get a palindrome (224132242231422).

The spelling of 222012220021200 in words is "two hundred twenty-two trillion, twelve billion, two hundred twenty million, twenty-one thousand, two hundred".