1002122003 has 4 divisors (see below), whose sum is σ = 1003741560. Its totient is φ = 1000502448.

The previous prime is 1002121963. The next prime is 1002122047. The reversal of 1002122003 is 3002212001.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3002212001 = 1151 ⋅2608351.

It is a cyclic number.

It is not a de Polignac number, because 1002122003 - 2²⁶ = 935013139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1002122063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 808850 + ... + 810087.

It is an arithmetic number, because the mean of its divisors is an integer number (250935390).

Almost surely, 2^1002122003 is an apocalyptic number.

1002122003 is a deficient number, since it is larger than the sum of its proper divisors (1619557).

1002122003 is an equidigital number, since it uses as much as digits as its factorization.

1002122003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1619556.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 1002122003 is about 31656.3106346902. The cubic root of 1002122003 is about 1000.7068346005.

Adding to 1002122003 its reverse (3002212001), we get a palindrome (4004334004).

The spelling of 1002122003 in words is "one billion, two million, one hundred twenty-two thousand, three".