120211201221121 has 4 divisors (see below), whose sum is σ = 120211479385092. Its totient is φ = 120210923057152.

The previous prime is 120211201221073. The next prime is 120211201221193. The reversal of 120211201221121 is 121122102112021.

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 60251189962896 + 59960011258225 = 7762164^2 + 7743385^2 .

It is a cyclic number.

It is not a de Polignac number, because 120211201221121 - 2⁷ = 120211201220993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120211201221821) 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, 138432736 + ... + 139298401.

It is an arithmetic number, because the mean of its divisors is an integer number (30052869846273).

Almost surely, 2^{120211201221121} is an apocalyptic number.

It is an amenable number.

120211201221121 is a deficient number, since it is larger than the sum of its proper divisors (278163971).

120211201221121 is an equidigital number, since it uses as much as digits as its factorization.

120211201221121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278163970.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 120211201221121 its reverse (121122102112021), we get a palindrome (241333303333142).

The spelling of 120211201221121 in words is "one hundred twenty trillion, two hundred eleven billion, two hundred one million, two hundred twenty-one thousand, one hundred twenty-one".