100222212000221 has 4 divisors (see below), whose sum is σ = 100226170092444. Its totient is φ = 100218253908000.

The previous prime is 100222212000203. The next prime is 100222212000227. The reversal of 100222212000221 is 122000212222001.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 59971688851321 + 40250523148900 = 7744139^2 + 6344330^2 .

It is a cyclic number.

It is not a de Polignac number, because 100222212000221 - 2¹⁴ = 100222211983837 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 100222212000221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100222212000227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1979008130 + ... + 1979058771.

It is an arithmetic number, because the mean of its divisors is an integer number (25056542523111).

Almost surely, 2^{100222212000221} is an apocalyptic number.

It is an amenable number.

100222212000221 is a deficient number, since it is larger than the sum of its proper divisors (3958092223).

100222212000221 is an equidigital number, since it uses as much as digits as its factorization.

100222212000221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3958092222.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 100222212000221 its reverse (122000212222001), we get a palindrome (222222424222222).

The spelling of 100222212000221 in words is "one hundred trillion, two hundred twenty-two billion, two hundred twelve million, two hundred twenty-one", and thus it is an aban number.