2002030644721 has 4 divisors (see below), whose sum is σ = 2119797153252. Its totient is φ = 1884264136192.

The previous prime is 2002030644701. The next prime is 2002030644749. The reversal of 2002030644721 is 1274460302002.

It is a happy number.

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 1836198444096 + 165832200625 = 1355064^2 + 407225^2 .

It is a cyclic number.

It is not a de Polignac number, because 2002030644721 - 2⁹ = 2002030644209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2002030644701) 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, 58883254240 + ... + 58883254273.

It is an arithmetic number, because the mean of its divisors is an integer number (529949288313).

Almost surely, 2^{2002030644721} is an apocalyptic number.

It is an amenable number.

2002030644721 is a deficient number, since it is larger than the sum of its proper divisors (117766508531).

2002030644721 is a wasteful number, since it uses less digits than its factorization.

2002030644721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117766508530.

The product of its (nonzero) digits is 16128, while the sum is 31.

Adding to 2002030644721 its reverse (1274460302002), we get a palindrome (3276490946723).

The spelling of 2002030644721 in words is "two trillion, two billion, thirty million, six hundred forty-four thousand, seven hundred twenty-one".