1210330112021 has 8 divisors (see below), whose sum is σ = 1215953780184. Its totient is φ = 1204710112000.

The previous prime is 1210330111993. The next prime is 1210330112029. The reversal of 1210330112021 is 1202110330121.

It can be written as a sum of positive squares in 4 ways, for example, as 79299025 + 1210250812996 = 8905^2 + 1100114^2 .

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 1210330112021 - 2⁶ = 1210330111957 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210330112029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 254480 + ... + 1576521.

It is an arithmetic number, because the mean of its divisors is an integer number (151994222523).

Almost surely, 2^{1210330112021} is an apocalyptic number.

It is an amenable number.

1210330112021 is a deficient number, since it is larger than the sum of its proper divisors (5623668163).

1210330112021 is a wasteful number, since it uses less digits than its factorization.

1210330112021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1834071.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 1210330112021 its reverse (1202110330121), we get a palindrome (2412440442142).

The spelling of 1210330112021 in words is "one trillion, two hundred ten billion, three hundred thirty million, one hundred twelve thousand, twenty-one".