2002303021121 has 4 divisors (see below), whose sum is σ = 2156326330452. Its totient is φ = 1848279711792.

The previous prime is 2002303021111. The next prime is 2002303021217. The reversal of 2002303021121 is 1211203032002.

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

It can be written as a sum of positive squares in 2 ways, for example, as 319717870096 + 1682585151025 = 565436^2 + 1297145^2 .

It is a cyclic number.

It is not a de Polignac number, because 2002303021121 - 2⁶ = 2002303021057 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2002303021121.

It is not an unprimeable number, because it can be changed into a prime (2002303021111) 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, 77011654646 + ... + 77011654671.

It is an arithmetic number, because the mean of its divisors is an integer number (539081582613).

Almost surely, 2^{2002303021121} is an apocalyptic number.

It is an amenable number.

2002303021121 is a deficient number, since it is larger than the sum of its proper divisors (154023309331).

2002303021121 is a wasteful number, since it uses less digits than its factorization.

2002303021121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154023309330.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 2002303021121 its reverse (1211203032002), we get a palindrome (3213506053123).

The spelling of 2002303021121 in words is "two trillion, two billion, three hundred three million, twenty-one thousand, one hundred twenty-one".