221120100012222 has 16 divisors (see below), whose sum is σ = 491378000027280. Its totient is φ = 73706700004056.

The previous prime is 221120100012211. The next prime is 221120100012263. The reversal of 221120100012222 is 222210001021122.

It is a happy number.

221120100012222 is a `hidden beast` number, since 221 + 120 + 100 + 0 + 1 + 2 + 222 = 666.

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 = 221120100012195 and 221120100012204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2047408333393 + ... + 2047408333500.

It is an arithmetic number, because the mean of its divisors is an integer number (30711125001705).

Almost surely, 2^{221120100012222} is an apocalyptic number.

221120100012222 is an abundant number, since it is smaller than the sum of its proper divisors (270257900015058).

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

221120100012222 is a wasteful number, since it uses less digits than its factorization.

221120100012222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4094816666904 (or 4094816666898 counting only the distinct ones).

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

Adding to 221120100012222 its reverse (222210001021122), we get a palindrome (443330101033344).

The spelling of 221120100012222 in words is "two hundred twenty-one trillion, one hundred twenty billion, one hundred million, twelve thousand, two hundred twenty-two".