1113212203 has 4 divisors (see below), whose sum is σ = 1124234208. Its totient is φ = 1102190200.

The previous prime is 1113212137. The next prime is 1113212273. The reversal of 1113212203 is 3022123111.

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 1113212203 - 2¹³ = 1113204011 is a prime.

It is a super-2 number, since 2×1113212203² = 2478482817816226418, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1113212273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5510851 + ... + 5511052.

It is an arithmetic number, because the mean of its divisors is an integer number (281058552).

Almost surely, 2^1113212203 is an apocalyptic number.

1113212203 is a deficient number, since it is larger than the sum of its proper divisors (11022005).

1113212203 is a wasteful number, since it uses less digits than its factorization.

1113212203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11022004.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1113212203 is about 33364.8348265056. The cubic root of 1113212203 is about 1036.3966156701.

Adding to 1113212203 its reverse (3022123111), we get a palindrome (4135335314).

The spelling of 1113212203 in words is "one billion, one hundred thirteen million, two hundred twelve thousand, two hundred three".