120100002222121 has 8 divisors (see below), whose sum is σ = 123188428778184. Its totient is φ = 117019154628480.

The previous prime is 120100002222119. The next prime is 120100002222143. The reversal of 120100002222121 is 121222200001021.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 328975662096 + 119771026560025 = 573564^2 + 10943995^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 120100002222121 - 2¹ = 120100002222119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120100002222095 and 120100002222104.

It is not an unprimeable number, because it can be changed into a prime (120100002226121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1894708506 + ... + 1894771891.

It is an arithmetic number, because the mean of its divisors is an integer number (15398553597273).

Almost surely, 2^{120100002222121} is an apocalyptic number.

It is an amenable number.

120100002222121 is a deficient number, since it is larger than the sum of its proper divisors (3088426556063).

120100002222121 is an equidigital number, since it uses as much as digits as its factorization.

120100002222121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3789481211.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 120100002222121 its reverse (121222200001021), we get a palindrome (241322202223142).

The spelling of 120100002222121 in words is "one hundred twenty trillion, one hundred billion, two million, two hundred twenty-two thousand, one hundred twenty-one".