1011211322003 has 4 divisors (see below), whose sum is σ = 1013922344688. Its totient is φ = 1008500299320.

The previous prime is 1011211321979. The next prime is 1011211322029. The reversal of 1011211322003 is 3002231121101.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1011211322003 - 2²⁰ = 1011210273427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1011201322003) 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 3 ways as a sum of consecutive naturals, for example, 1355510783 + ... + 1355511528.

It is an arithmetic number, because the mean of its divisors is an integer number (253480586172).

Almost surely, 2^{1011211322003} is an apocalyptic number.

1011211322003 is a deficient number, since it is larger than the sum of its proper divisors (2711022685).

1011211322003 is an equidigital number, since it uses as much as digits as its factorization.

1011211322003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2711022684.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 1011211322003 its reverse (3002231121101), we get a palindrome (4013442443104).

The spelling of 1011211322003 in words is "one trillion, eleven billion, two hundred eleven million, three hundred twenty-two thousand, three".