22021001210 has 16 divisors (see below), whose sum is σ = 42686864136. Its totient is φ = 8130831168.

The previous prime is 22021001183. The next prime is 22021001213. The reversal of 22021001210 is 1210012022.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 17260967161 + 4760034049 = 131381^2 + 68993^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22021001191 and 22021001200.

It is not an unprimeable number, because it can be changed into a prime (22021001213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84696029 + ... + 84696288.

Almost surely, 2^22021001210 is an apocalyptic number.

22021001210 is a deficient number, since it is larger than the sum of its proper divisors (20665862926).

22021001210 is a wasteful number, since it uses less digits than its factorization.

22021001210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169392337.

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

Adding to 22021001210 its reverse (1210012022), we get a palindrome (23231013232).

The spelling of 22021001210 in words is "twenty-two billion, twenty-one million, one thousand, two hundred ten".