22121002010 has 32 divisors (see below), whose sum is σ = 41216947200. Its totient is φ = 8539073280.

The previous prime is 22121002009. The next prime is 22121002019. The reversal of 22121002010 is 1020012122.

It is a happy number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22121001982 and 22121002000.

It is not an unprimeable number, because it can be changed into a prime (22121002019) 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, 11906 + ... + 210674.

It is an arithmetic number, because the mean of its divisors is an integer number (1288029600).

Almost surely, 2^22121002010 is an apocalyptic number.

22121002010 is a deficient number, since it is larger than the sum of its proper divisors (19095945190).

22121002010 is a wasteful number, since it uses less digits than its factorization.

22121002010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199166.

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

Adding to 22121002010 its reverse (1020012122), we get a palindrome (23141014132).

The spelling of 22121002010 in words is "twenty-two billion, one hundred twenty-one million, two thousand, ten".