1222111100203 has 8 divisors (see below), whose sum is σ = 1410527098080. Its totient is φ = 1037152276800.

The previous prime is 1222111100191. The next prime is 1222111100213. The reversal of 1222111100203 is 3020011112221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1222111100203 - 2²¹ = 1222109003051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1222111100213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 864292858 + ... + 864294271.

It is an arithmetic number, because the mean of its divisors is an integer number (176315887260).

Almost surely, 2^{1222111100203} is an apocalyptic number.

1222111100203 is a deficient number, since it is larger than the sum of its proper divisors (188415997877).

1222111100203 is a wasteful number, since it uses less digits than its factorization.

1222111100203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1728587237.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 1222111100203 its reverse (3020011112221), we get a palindrome (4242122212424).

The spelling of 1222111100203 in words is "one trillion, two hundred twenty-two billion, one hundred eleven million, one hundred thousand, two hundred three".