222112021002120 has 96 divisors (see below), whose sum is σ = 722047800029400. Its totient is φ = 59214796839936.

The previous prime is 222112021002037. The next prime is 222112021002121. The reversal of 222112021002120 is 21200120211222.

It is a happy number.

222112021002120 is a `hidden beast` number, since 2 + 221 + 1 + 20 + 210 + 0 + 212 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 105232267525284 + 116879753476836 = 10258278^2 + 10811094^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 222112021002093 and 222112021002102.

It is not an unprimeable number, because it can be changed into a prime (222112021002121) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 77101447 + ... + 79930326.

Almost surely, 2^{222112021002120} is an apocalyptic number.

222112021002120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222112021002120 is an abundant number, since it is smaller than the sum of its proper divisors (499935779027280).

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

222112021002120 is a wasteful number, since it uses less digits than its factorization.

222112021002120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157035719 (or 157035712 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 222112021002120 its reverse (21200120211222), we get a palindrome (243312141213342).

The spelling of 222112021002120 in words is "two hundred twenty-two trillion, one hundred twelve billion, twenty-one million, two thousand, one hundred twenty".