21022200211 has 16 divisors (see below), whose sum is σ = 21937617504. Its totient is φ = 20126905344.

The previous prime is 21022200131. The next prime is 21022200223. The reversal of 21022200211 is 11200222012.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 21022200211 - 2⁷ = 21022200083 is a prime.

It is a super-2 number, since 2×21022200211² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21022200191 and 21022200200.

It is not an unprimeable number, because it can be changed into a prime (21022200271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2815395 + ... + 2822851.

It is an arithmetic number, because the mean of its divisors is an integer number (1371101094).

Almost surely, 2^21022200211 is an apocalyptic number.

21022200211 is a deficient number, since it is larger than the sum of its proper divisors (915417293).

21022200211 is a wasteful number, since it uses less digits than its factorization.

21022200211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8790.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 21022200211 its reverse (11200222012), we get a palindrome (32222422223).

The spelling of 21022200211 in words is "twenty-one billion, twenty-two million, two hundred thousand, two hundred eleven".