1200111403 has 2 divisors, whose sum is σ = 1200111404. Its totient is φ = 1200111402.

The previous prime is 1200111373. The next prime is 1200111431. The reversal of 1200111403 is 3041110021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1200111403 - 2²⁵ = 1166556971 is a prime.

It is a super-2 number, since 2×1200111403² = 2880534759221256818, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1200111443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600055701 + 600055702.

It is an arithmetic number, because the mean of its divisors is an integer number (600055702).

Almost surely, 2^1200111403 is an apocalyptic number.

1200111403 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200111403 is an equidigital number, since it uses as much as digits as its factorization.

1200111403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1200111403 is about 34642.6240778611. The cubic root of 1200111403 is about 1062.6914524297.

Adding to 1200111403 its reverse (3041110021), we get a palindrome (4241221424).

The spelling of 1200111403 in words is "one billion, two hundred million, one hundred eleven thousand, four hundred three".