1211013003 has 16 divisors (see below), whose sum is σ = 1716494976. Its totient is φ = 756816000.

The previous prime is 1211012821. The next prime is 1211013031. The reversal of 1211013003 is 3003101121.

It is not a de Polignac number, because 1211013003 - 2²⁴ = 1194235787 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1211013003.

It is not an unprimeable number, because it can be changed into a prime (1211013103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34501 + ... + 60102.

It is an arithmetic number, because the mean of its divisors is an integer number (107280936).

Almost surely, 2^1211013003 is an apocalyptic number.

1211013003 is a deficient number, since it is larger than the sum of its proper divisors (505481973).

1211013003 is a wasteful number, since it uses less digits than its factorization.

1211013003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94874.

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 1211013003 is about 34799.6121099072. The cubic root of 1211013003 is about 1065.8995252417.

Adding to 1211013003 its reverse (3003101121), we get a palindrome (4214114124).

The spelling of 1211013003 in words is "one billion, two hundred eleven million, thirteen thousand, three".