1002123301 has 4 divisors (see below), whose sum is σ = 1002232332. Its totient is φ = 1002014272.

The previous prime is 1002123277. The next prime is 1002123349. The reversal of 1002123301 is 1033212001.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 648720900 + 353402401 = 25470^2 + 18799^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1002123301 is a prime.

It is a super-2 number, since 2×1002123301² = 2008502220814273202, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002123371) 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, 39316 + ... + 59581.

It is an arithmetic number, because the mean of its divisors is an integer number (250558083).

Almost surely, 2^1002123301 is an apocalyptic number.

It is an amenable number.

1002123301 is a deficient number, since it is larger than the sum of its proper divisors (109031).

1002123301 is an equidigital number, since it uses as much as digits as its factorization.

1002123301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109030.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 1002123301 is about 31656.3311361250. The cubic root of 1002123301 is about 1000.7072666559.

Adding to 1002123301 its reverse (1033212001), we get a palindrome (2035335302).

The spelling of 1002123301 in words is "one billion, two million, one hundred twenty-three thousand, three hundred one".