1210121021118 has 8 divisors (see below), whose sum is σ = 2420242042248. Its totient is φ = 403373673704.

The previous prime is 1210121021077. The next prime is 1210121021119. The reversal of 1210121021118 is 8111201210121.

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

1210121021118 is an admirable number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1210121021094 and 1210121021103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210121021119) 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, 100843418421 + ... + 100843418432.

It is an arithmetic number, because the mean of its divisors is an integer number (302530255281).

Almost surely, 2^{1210121021118} is an apocalyptic number.

1210121021118 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1210121021118 is a wasteful number, since it uses less digits than its factorization.

1210121021118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201686836858.

The product of its (nonzero) digits is 64, while the sum is 21.

Adding to 1210121021118 its reverse (8111201210121), we get a palindrome (9321322231239).

The spelling of 1210121021118 in words is "one trillion, two hundred ten billion, one hundred twenty-one million, twenty-one thousand, one hundred eighteen".