1220213204411 has 4 divisors (see below), whose sum is σ = 1220497707000. Its totient is φ = 1219928701824.

The previous prime is 1220213204407. The next prime is 1220213204443. The reversal of 1220213204411 is 1144023120221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1220213204411 - 2² = 1220213204407 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220213204471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142244861 + ... + 142253438.

It is an arithmetic number, because the mean of its divisors is an integer number (305124426750).

Almost surely, 2^{1220213204411} is an apocalyptic number.

1220213204411 is a deficient number, since it is larger than the sum of its proper divisors (284502589).

1220213204411 is an equidigital number, since it uses as much as digits as its factorization.

1220213204411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284502588.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 1220213204411 its reverse (1144023120221), we get a palindrome (2364236324632).

The spelling of 1220213204411 in words is "one trillion, two hundred twenty billion, two hundred thirteen million, two hundred four thousand, four hundred eleven".