111220121222103 has 64 divisors (see below), whose sum is σ = 162595917665280. Its totient is φ = 67374623232000.

The previous prime is 111220121222053. The next prime is 111220121222167. The reversal of 111220121222103 is 301222121022111.

It is not a de Polignac number, because 111220121222103 - 2¹⁷ = 111220121091031 is a prime.

It is a super-2 number, since 2×111220121222103² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 111220121222103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111220121224103) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1299242503 + ... + 1299328103.

It is an arithmetic number, because the mean of its divisors is an integer number (2540561213520).

Almost surely, 2^{111220121222103} is an apocalyptic number.

111220121222103 is a deficient number, since it is larger than the sum of its proper divisors (51375796443177).

111220121222103 is a wasteful number, since it uses less digits than its factorization.

111220121222103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94408.

The product of its (nonzero) digits is 192, while the sum is 21.

Adding to 111220121222103 its reverse (301222121022111), we get a palindrome (412442242244214).

The spelling of 111220121222103 in words is "one hundred eleven trillion, two hundred twenty billion, one hundred twenty-one million, two hundred twenty-two thousand, one hundred three".