11211020003 has 2 divisors, whose sum is σ = 11211020004. Its totient is φ = 11211020002.

The previous prime is 11211019991. The next prime is 11211020057. The reversal of 11211020003 is 30002011211.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11211020003 - 2¹⁰ = 11211018979 is a prime.

It is a super-2 number, since 2×11211020003² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11211020083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5605510001 + 5605510002.

It is an arithmetic number, because the mean of its divisors is an integer number (5605510002).

Almost surely, 2^11211020003 is an apocalyptic number.

11211020003 is a deficient number, since it is larger than the sum of its proper divisors (1).

11211020003 is an equidigital number, since it uses as much as digits as its factorization.

11211020003 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 11211020003 its reverse (30002011211), we get a palindrome (41213031214).

The spelling of 11211020003 in words is "eleven billion, two hundred eleven million, twenty thousand, three".