21020020212022 has 8 divisors (see below), whose sum is σ = 33955417265616. Its totient is φ = 9701547790152.

The previous prime is 21020020212011. The next prime is 21020020212041. The reversal of 21020020212022 is 22021202002012.

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 = 21020020211987 and 21020020212005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 404231157898 + ... + 404231157949.

It is an arithmetic number, because the mean of its divisors is an integer number (4244427158202).

Almost surely, 2^{21020020212022} is an apocalyptic number.

21020020212022 is a deficient number, since it is larger than the sum of its proper divisors (12935397053594).

21020020212022 is a wasteful number, since it uses less digits than its factorization.

21020020212022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 808462315862.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 21020020212022 its reverse (22021202002012), we get a palindrome (43041222214034).

The spelling of 21020020212022 in words is "twenty-one trillion, twenty billion, twenty million, two hundred twelve thousand, twenty-two".