21200011022 has 16 divisors (see below), whose sum is σ = 32175868032. Its totient is φ = 10475416320.

The previous prime is 21200010991. The next prime is 21200011043. The reversal of 21200011022 is 22011000212.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21200010994 and 21200011012.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112379 + ... + 234582.

It is an arithmetic number, because the mean of its divisors is an integer number (2010991752).

Almost surely, 2^21200011022 is an apocalyptic number.

21200011022 is a deficient number, since it is larger than the sum of its proper divisors (10975857010).

21200011022 is a wasteful number, since it uses less digits than its factorization.

21200011022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347323.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 21200011022 its reverse (22011000212), we get a palindrome (43211011234).

The spelling of 21200011022 in words is "twenty-one billion, two hundred million, eleven thousand, twenty-two".