1222111203 has 4 divisors (see below), whose sum is σ = 1629481608. Its totient is φ = 814740800.

The previous prime is 1222111201. The next prime is 1222111207. The reversal of 1222111203 is 3021112221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1222111203 - 2¹ = 1222111201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1222111201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 203685198 + ... + 203685203.

It is an arithmetic number, because the mean of its divisors is an integer number (407370402).

Almost surely, 2^1222111203 is an apocalyptic number.

1222111203 is a deficient number, since it is larger than the sum of its proper divisors (407370405).

1222111203 is an equidigital number, since it uses as much as digits as its factorization.

1222111203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407370404.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 1222111203 is about 34958.7071128210. The cubic root of 1222111203 is about 1069.1457364760.

Adding to 1222111203 its reverse (3021112221), we get a palindrome (4243223424).

The spelling of 1222111203 in words is "one billion, two hundred twenty-two million, one hundred eleven thousand, two hundred three".