1220213112103 has 16 divisors (see below), whose sum is σ = 1238404302720. Its totient is φ = 1202062934016.

The previous prime is 1220213112077. The next prime is 1220213112211. The reversal of 1220213112103 is 3012113120221.

It is a cyclic number.

It is not a de Polignac number, because 1220213112103 - 2⁹ = 1220213111591 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 (1220213113103) 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, 391217778 + ... + 391220896.

It is an arithmetic number, because the mean of its divisors is an integer number (77400268920).

Almost surely, 2^{1220213112103} is an apocalyptic number.

1220213112103 is a deficient number, since it is larger than the sum of its proper divisors (18191190617).

1220213112103 is a wasteful number, since it uses less digits than its factorization.

1220213112103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7866.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 1220213112103 its reverse (3012113120221), we get a palindrome (4232326232324).

The spelling of 1220213112103 in words is "one trillion, two hundred twenty billion, two hundred thirteen million, one hundred twelve thousand, one hundred three".