1220212220213 has 16 divisors (see below), whose sum is σ = 1442762612736. Its totient is φ = 1009872742320.

The previous prime is 1220212220209. The next prime is 1220212220237. The reversal of 1220212220213 is 3120222120221.

It is a cyclic number.

It is not a de Polignac number, because 1220212220213 - 2² = 1220212220209 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 (1220212220203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6250481 + ... + 6442742.

It is an arithmetic number, because the mean of its divisors is an integer number (90172663296).

Almost surely, 2^{1220212220213} is an apocalyptic number.

It is an amenable number.

1220212220213 is a deficient number, since it is larger than the sum of its proper divisors (222550392523).

1220212220213 is a wasteful number, since it uses less digits than its factorization.

1220212220213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12693704.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 1220212220213 its reverse (3120222120221), we get a palindrome (4340434340434).

The spelling of 1220212220213 in words is "one trillion, two hundred twenty billion, two hundred twelve million, two hundred twenty thousand, two hundred thirteen".