1200101111003 has 2 divisors, whose sum is σ = 1200101111004. Its totient is φ = 1200101111002.

The previous prime is 1200101110981. The next prime is 1200101111021. The reversal of 1200101111003 is 3001111010021.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1200101111003 is a prime.

It is not a weakly prime, because it can be changed into another prime (1200101111063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600050555501 + 600050555502.

It is an arithmetic number, because the mean of its divisors is an integer number (600050555502).

Almost surely, 2^{1200101111003} is an apocalyptic number.

1200101111003 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200101111003 is an equidigital number, since it uses as much as digits as its factorization.

1200101111003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6, while the sum is 11.

Adding to 1200101111003 its reverse (3001111010021), we get a palindrome (4201212121024).

The spelling of 1200101111003 in words is "one trillion, two hundred billion, one hundred one million, one hundred eleven thousand, three".