21010000022 has 16 divisors (see below), whose sum is σ = 34387092432. Its totient is φ = 9548029920.

The previous prime is 21010000021. The next prime is 21010000031. The reversal of 21010000022 is 22000001012.

It is a junction number, because it is equal to n+sod(n) for n = 21009999964 and 21010000009.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21010000021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13388 + ... + 205424.

It is an arithmetic number, because the mean of its divisors is an integer number (2149193277).

Almost surely, 2^21010000022 is an apocalyptic number.

21010000022 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21010000022 is a deficient number, since it is larger than the sum of its proper divisors (13377092410).

21010000022 is a wasteful number, since it uses less digits than its factorization.

21010000022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197023.

The product of its (nonzero) digits is 8, while the sum is 8.

Adding to 21010000022 its reverse (22000001012), we get a palindrome (43010001034).

The spelling of 21010000022 in words is "twenty-one billion, ten million, twenty-two", and thus it is an aban number and an uban number.