20021002022 has 24 divisors (see below), whose sum is σ = 34962053976. Its totient is φ = 8573687808.

The previous prime is 20021002019. The next prime is 20021002033. The reversal of 20021002022 is 22020012002.

It is a junction number, because it is equal to n+sod(n) for n = 20021001994 and 20021002012.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 46118 + ... + 205350.

It is an arithmetic number, because the mean of its divisors is an integer number (1456752249).

Almost surely, 2^20021002022 is an apocalyptic number.

20021002022 is a deficient number, since it is larger than the sum of its proper divisors (14941051954).

20021002022 is a wasteful number, since it uses less digits than its factorization.

20021002022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160532 (or 160525 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

Adding to 20021002022 its reverse (22020012002), we get a palindrome (42041014024).

The spelling of 20021002022 in words is "twenty billion, twenty-one million, two thousand, twenty-two".