1221020302213 has 8 divisors (see below), whose sum is σ = 1221423524640. Its totient is φ = 1220617156560.

The previous prime is 1221020302211. The next prime is 1221020302231. The reversal of 1221020302213 is 3122030201221.

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 1221020302213 - 2¹ = 1221020302211 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 (1221020302211) 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, 52233418 + ... + 52256788.

It is an arithmetic number, because the mean of its divisors is an integer number (152677940580).

Almost surely, 2^{1221020302213} is an apocalyptic number.

It is an amenable number.

1221020302213 is a deficient number, since it is larger than the sum of its proper divisors (403222427).

1221020302213 is an equidigital number, since it uses as much as digits as its factorization.

1221020302213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38387.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 1221020302213 its reverse (3122030201221), we get a palindrome (4343050503434).

The spelling of 1221020302213 in words is "one trillion, two hundred twenty-one billion, twenty million, three hundred two thousand, two hundred thirteen".