21122000210 has 8 divisors (see below), whose sum is σ = 38019600396. Its totient is φ = 8448800080.

The previous prime is 21122000209. The next prime is 21122000213. The reversal of 21122000210 is 1200022112.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 17131930321 + 3990069889 = 130889^2 + 63167^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×21122000210² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21122000191 and 21122000200.

It is not an unprimeable number, because it can be changed into a prime (21122000213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1056100001 + ... + 1056100020.

Almost surely, 2^21122000210 is an apocalyptic number.

21122000210 is a deficient number, since it is larger than the sum of its proper divisors (16897600186).

21122000210 is a wasteful number, since it uses less digits than its factorization.

21122000210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2112200028.

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

Adding to 21122000210 its reverse (1200022112), we get a palindrome (22322022322).

The spelling of 21122000210 in words is "twenty-one billion, one hundred twenty-two million, two hundred ten", and thus it is an aban number.