21200021002022 has 8 divisors (see below), whose sum is σ = 32321343495072. Its totient is φ = 10426239837000.

The previous prime is 21200021002003. The next prime is 21200021002049. The reversal of 21200021002022 is 22020012000212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 21200021001988 and 21200021002006.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86885331854 + ... + 86885332097.

It is an arithmetic number, because the mean of its divisors is an integer number (4040167936884).

Almost surely, 2^{21200021002022} is an apocalyptic number.

21200021002022 is a deficient number, since it is larger than the sum of its proper divisors (11121322493050).

21200021002022 is a wasteful number, since it uses less digits than its factorization.

21200021002022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173770664014.

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

Adding to 21200021002022 its reverse (22020012000212), we get a palindrome (43220033002234).

The spelling of 21200021002022 in words is "twenty-one trillion, two hundred billion, twenty-one million, two thousand, twenty-two".