2221111220103 has 24 divisors (see below), whose sum is σ = 3220079093712. Its totient is φ = 1475292809088.

The previous prime is 2221111220093. The next prime is 2221111220161. The reversal of 2221111220103 is 3010221111222.

It is not a de Polignac number, because 2221111220103 - 2⁶ = 2221111220039 is a prime.

It is a super-2 number, since 2×2221111220103² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221111220903) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18413275 + ... + 18533507.

It is an arithmetic number, because the mean of its divisors is an integer number (134169962238).

Almost surely, 2^{2221111220103} is an apocalyptic number.

2221111220103 is a deficient number, since it is larger than the sum of its proper divisors (998967873609).

2221111220103 is a wasteful number, since it uses less digits than its factorization.

2221111220103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127775 (or 127772 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 2221111220103 its reverse (3010221111222), we get a palindrome (5231332331325).

The spelling of 2221111220103 in words is "two trillion, two hundred twenty-one billion, one hundred eleven million, two hundred twenty thousand, one hundred three".