1220103103111 has 16 divisors (see below), whose sum is σ = 1257451050240. Its totient is φ = 1183137042880.

The previous prime is 1220103103019. The next prime is 1220103103129. The reversal of 1220103103111 is 1113013010221.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1220103103111 - 2⁹ = 1220103102599 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 (1220103103511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4649160 + ... + 4904578.

It is an arithmetic number, because the mean of its divisors is an integer number (78590690640).

Almost surely, 2^{1220103103111} is an apocalyptic number.

1220103103111 is a deficient number, since it is larger than the sum of its proper divisors (37347947129).

1220103103111 is a wasteful number, since it uses less digits than its factorization.

1220103103111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256166.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 1220103103111 its reverse (1113013010221), we get a palindrome (2333116113332).

The spelling of 1220103103111 in words is "one trillion, two hundred twenty billion, one hundred three million, one hundred three thousand, one hundred eleven".