22000121210 has 16 divisors (see below), whose sum is σ = 39764538792. Its totient is φ = 8763532800.

The previous prime is 22000121203. The next prime is 22000121219. The reversal of 22000121210 is 1212100022.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 21978952009 + 21169201 = 148253^2 + 4601^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22000121191 and 22000121200.

It is not an unprimeable number, because it can be changed into a prime (22000121219) 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, 4561931 + ... + 4566750.

Almost surely, 2^22000121210 is an apocalyptic number.

22000121210 is a deficient number, since it is larger than the sum of its proper divisors (17764417582).

22000121210 is a wasteful number, since it uses less digits than its factorization.

22000121210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9128929.

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

Adding to 22000121210 its reverse (1212100022), we get a palindrome (23212221232).

The spelling of 22000121210 in words is "twenty-two billion, one hundred twenty-one thousand, two hundred ten".