120002100222221 has 4 divisors (see below), whose sum is σ = 137145257396832. Its totient is φ = 102858943047612.

The previous prime is 120002100222203. The next prime is 120002100222239. The reversal of 120002100222221 is 122222001200021.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (120002100222203) and next prime (120002100222239).

It is a cyclic number.

It is not a de Polignac number, because 120002100222221 - 2⁶ = 120002100222157 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 120002100222221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120002100222821) 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, 8571578587295 + ... + 8571578587308.

It is an arithmetic number, because the mean of its divisors is an integer number (34286314349208).

Almost surely, 2^{120002100222221} is an apocalyptic number.

It is an amenable number.

120002100222221 is a deficient number, since it is larger than the sum of its proper divisors (17143157174611).

120002100222221 is an equidigital number, since it uses as much as digits as its factorization.

120002100222221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17143157174610.

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

Adding to 120002100222221 its reverse (122222001200021), we get a palindrome (242224101422242).

The spelling of 120002100222221 in words is "one hundred twenty trillion, two billion, one hundred million, two hundred twenty-two thousand, two hundred twenty-one".