1210002011221 has 8 divisors (see below), whose sum is σ = 1239964314624. Its totient is φ = 1180215440400.

The previous prime is 1210002011219. The next prime is 1210002011227. The reversal of 1210002011221 is 1221102000121.

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 1210002011221 - 2¹ = 1210002011219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210002011227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43919205 + ... + 43946746.

It is an arithmetic number, because the mean of its divisors is an integer number (154995539328).

Almost surely, 2^{1210002011221} is an apocalyptic number.

It is an amenable number.

1210002011221 is a deficient number, since it is larger than the sum of its proper divisors (29962303403).

1210002011221 is an equidigital number, since it uses as much as digits as its factorization.

1210002011221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87866291.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1210002011221 its reverse (1221102000121), we get a palindrome (2431104011342).

The spelling of 1210002011221 in words is "one trillion, two hundred ten billion, two million, eleven thousand, two hundred twenty-one".