1011201020003 has 2 divisors, whose sum is σ = 1011201020004. Its totient is φ = 1011201020002.

The previous prime is 1011201019891. The next prime is 1011201020017. The reversal of 1011201020003 is 3000201021101.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1011201020003 - 2¹² = 1011201015907 is a prime.

It is a super-2 number, since 2×1011201020003² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1011201020603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505600510001 + 505600510002.

It is an arithmetic number, because the mean of its divisors is an integer number (505600510002).

Almost surely, 2^{1011201020003} is an apocalyptic number.

1011201020003 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011201020003 is an equidigital number, since it uses as much as digits as its factorization.

1011201020003 is an evil number, because the sum of its binary digits is even.

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

Adding to 1011201020003 its reverse (3000201021101), we get a palindrome (4011402041104).

The spelling of 1011201020003 in words is "one trillion, eleven billion, two hundred one million, twenty thousand, three".