21020070022 has 8 divisors (see below), whose sum is σ = 36034405776. Its totient is φ = 9008601432.

The previous prime is 21020070017. The next prime is 21020070067. The reversal of 21020070022 is 22007002012.

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 = 21020069978 and 21020070005.

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, 750716773 + ... + 750716800.

It is an arithmetic number, because the mean of its divisors is an integer number (4504300722).

Almost surely, 2^21020070022 is an apocalyptic number.

21020070022 is a deficient number, since it is larger than the sum of its proper divisors (15014335754).

21020070022 is a wasteful number, since it uses less digits than its factorization.

21020070022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1501433582.

The product of its (nonzero) digits is 112, while the sum is 16.

Adding to 21020070022 its reverse (22007002012), we get a palindrome (43027072034).

The spelling of 21020070022 in words is "twenty-one billion, twenty million, seventy thousand, twenty-two".