1201110120121 has 8 divisors (see below), whose sum is σ = 1243774006920. Its totient is φ = 1158529319808.

The previous prime is 1201110120083. The next prime is 1201110120131. The reversal of 1201110120121 is 1210210111021.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 674469630121 + 526640490000 = 821261^2 + 725700^2 .

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 1201110120121 - 2¹¹ = 1201110118073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1201110120131) 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, 20742196 + ... + 20800021.

It is an arithmetic number, because the mean of its divisors is an integer number (155471750865).

Almost surely, 2^{1201110120121} is an apocalyptic number.

It is an amenable number.

1201110120121 is a deficient number, since it is larger than the sum of its proper divisors (42663886799).

1201110120121 is an equidigital number, since it uses as much as digits as its factorization.

1201110120121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41543243.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1201110120121 its reverse (1210210111021), we get a palindrome (2411320231142).

It can be divided in two parts, 1201110 and 120121, that added together give a palindrome (1321231).

The spelling of 1201110120121 in words is "one trillion, two hundred one billion, one hundred ten million, one hundred twenty thousand, one hundred twenty-one".