1010221001221 has 8 divisors (see below), whose sum is σ = 1054157906880. Its totient is φ = 966285283392.

The previous prime is 1010221001203. The next prime is 1010221001381. The reversal of 1010221001221 is 1221001220101.

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 1010221001221 - 2⁷ = 1010221001093 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 (1010221001021) 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, 1737661 + ... + 2244973.

It is an arithmetic number, because the mean of its divisors is an integer number (131769738360).

Almost surely, 2^{1010221001221} is an apocalyptic number.

It is an amenable number.

1010221001221 is a deficient number, since it is larger than the sum of its proper divisors (43936905659).

1010221001221 is an equidigital number, since it uses as much as digits as its factorization.

1010221001221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 593915.

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

Adding to 1010221001221 its reverse (1221001220101), we get a palindrome (2231222221322).

The spelling of 1010221001221 in words is "one trillion, ten billion, two hundred twenty-one million, one thousand, two hundred twenty-one".