2000002002021 has 40 divisors (see below), whose sum is σ = 3007915667328. Its totient is φ = 1324296540000.

The previous prime is 2000002002017. The next prime is 2000002002041. The reversal of 2000002002021 is 1202002000002.

It is not a de Polignac number, because 2000002002021 - 2² = 2000002002017 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 2000002001994 and 2000002002012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2000002002001) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 142129416 + ... + 142143486.

Almost surely, 2^{2000002002021} is an apocalyptic number.

It is an amenable number.

2000002002021 is a deficient number, since it is larger than the sum of its proper divisors (1007913665307).

2000002002021 is a wasteful number, since it uses less digits than its factorization.

2000002002021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25855 (or 25846 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

Adding to 2000002002021 its reverse (1202002000002), we get a palindrome (3202004002023).

The spelling of 2000002002021 in words is "two trillion, two million, two thousand, twenty-one".