1011211003 has 16 divisors (see below), whose sum is σ = 1132387200. Its totient is φ = 895003200.

The previous prime is 1011210997. The next prime is 1011211013. The reversal of 1011211003 is 3001121101.

It is a cyclic number.

It is not a de Polignac number, because 1011211003 - 2⁹ = 1011210491 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1011211013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 244648 + ... + 248746.

It is an arithmetic number, because the mean of its divisors is an integer number (70774200).

Almost surely, 2^1011211003 is an apocalyptic number.

1011211003 is a deficient number, since it is larger than the sum of its proper divisors (121176197).

1011211003 is a wasteful number, since it uses less digits than its factorization.

1011211003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4698.

The product of its (nonzero) digits is 6, while the sum is 10.

The square root of 1011211003 is about 31799.5440690586. The cubic root of 1011211003 is about 1003.7231221585.

Adding to 1011211003 its reverse (3001121101), we get a palindrome (4012332104).

It can be divided in two parts, 10112 and 11003, that added together give a triangular number (21115 = T₂₀₅).

The spelling of 1011211003 in words is "one billion, eleven million, two hundred eleven thousand, three".