1220013313111 has 4 divisors (see below), whose sum is σ = 1249769735424. Its totient is φ = 1190256890800.

The previous prime is 1220013313069. The next prime is 1220013313217. The reversal of 1220013313111 is 1113133100221.

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 1220013313111 - 2¹¹ = 1220013311063 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 (1220013310111) 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, 14878211095 + ... + 14878211176.

It is an arithmetic number, because the mean of its divisors is an integer number (312442433856).

Almost surely, 2^{1220013313111} is an apocalyptic number.

1220013313111 is a deficient number, since it is larger than the sum of its proper divisors (29756422313).

1220013313111 is an equidigital number, since it uses as much as digits as its factorization.

1220013313111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29756422312.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 1220013313111 its reverse (1113133100221), we get a palindrome (2333146413332).

The spelling of 1220013313111 in words is "one trillion, two hundred twenty billion, thirteen million, three hundred thirteen thousand, one hundred eleven".