120111102012221 has 4 divisors (see below), whose sum is σ = 120404772188700. Its totient is φ = 119817431835744.

The previous prime is 120111102012193. The next prime is 120111102012227. The reversal of 120111102012221 is 122210201111021.

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 110648624671225 + 9462477340996 = 10518965^2 + 3076114^2 .

It is a cyclic number.

It is not a de Polignac number, because 120111102012221 - 2²⁶ = 120111034903357 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 120111102012221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120111102012227) 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, 146835087626 + ... + 146835088443.

It is an arithmetic number, because the mean of its divisors is an integer number (30101193047175).

Almost surely, 2^{120111102012221} is an apocalyptic number.

It is an amenable number.

120111102012221 is a deficient number, since it is larger than the sum of its proper divisors (293670176479).

120111102012221 is an equidigital number, since it uses as much as digits as its factorization.

120111102012221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293670176478.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 120111102012221 its reverse (122210201111021), we get a palindrome (242321303123242).

The spelling of 120111102012221 in words is "one hundred twenty trillion, one hundred eleven billion, one hundred two million, twelve thousand, two hundred twenty-one".