1220213311103 has 4 divisors (see below), whose sum is σ = 1259575030848. Its totient is φ = 1180851591360.

The previous prime is 1220213311091. The next prime is 1220213311129. The reversal of 1220213311103 is 3011133120221.

It is a happy number.

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 1220213311103 - 2¹⁶ = 1220213245567 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220213311133) 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, 19680859826 + ... + 19680859887.

It is an arithmetic number, because the mean of its divisors is an integer number (314893757712).

Almost surely, 2^{1220213311103} is an apocalyptic number.

1220213311103 is a deficient number, since it is larger than the sum of its proper divisors (39361719745).

1220213311103 is an equidigital number, since it uses as much as digits as its factorization.

1220213311103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39361719744.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 1220213311103 its reverse (3011133120221), we get a palindrome (4231346431324).

The spelling of 1220213311103 in words is "one trillion, two hundred twenty billion, two hundred thirteen million, three hundred eleven thousand, one hundred three".