1200111203 has 2 divisors, whose sum is σ = 1200111204. Its totient is φ = 1200111202.

The previous prime is 1200111197. The next prime is 1200111223. The reversal of 1200111203 is 3021110021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1200111203 - 2⁶ = 1200111139 is a prime.

It is a super-2 number, since 2×1200111203² = 2880533799132214418, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1200111223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600055601 + 600055602.

It is an arithmetic number, because the mean of its divisors is an integer number (600055602).

Almost surely, 2^1200111203 is an apocalyptic number.

1200111203 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200111203 is an equidigital number, since it uses as much as digits as its factorization.

1200111203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 1200111203 is about 34642.6211912436. The cubic root of 1200111203 is about 1062.6913933967.

Adding to 1200111203 its reverse (3021110021), we get a palindrome (4221221224).

The spelling of 1200111203 in words is "one billion, two hundred million, one hundred eleven thousand, two hundred three".