2002020221021 has 16 divisors (see below), whose sum is σ = 2059323108480. Its totient is φ = 1945623650880.

The previous prime is 2002020220973. The next prime is 2002020221027. The reversal of 2002020221021 is 1201220202002.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2002020221021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2002020220987 and 2002020221005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2002020221027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1276256 + ... + 2373366.

It is an arithmetic number, because the mean of its divisors is an integer number (128707694280).

Almost surely, 2^{2002020221021} is an apocalyptic number.

It is an amenable number.

2002020221021 is a deficient number, since it is larger than the sum of its proper divisors (57302887459).

2002020221021 is a wasteful number, since it uses less digits than its factorization.

2002020221021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1097524.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 2002020221021 its reverse (1201220202002), we get a palindrome (3203240423023).

The spelling of 2002020221021 in words is "two trillion, two billion, twenty million, two hundred twenty-one thousand, twenty-one".